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All questions of Utility Bills for Commerce Exam
Deepika's internet bill for June was Rs. 60, and it increased by 25% in July. What was her internet bill in July?- a)Rs. 65
- b)Rs. 70
- c)Rs. 75
- d)Rs. 80
Correct answer is option 'C'. Can you explain this answer?
Deepika's internet bill for June was Rs. 60, and it increased by 25% in July. What was her internet bill in July?
a)
Rs. 65
b)
Rs. 70
c)
Rs. 75
d)
Rs. 80
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Curiosity Classes answered |
Deepika's internet bill increased by 25% in July. Using the same formula as question 1, we find the new bill amount.
Rahul's electricity bill for January was Rs. 120, and it increased to Rs. 150 in February. What is the percentage increase in his electricity bill from January to February?- a)20%
- b)25%
- c)30%
- d)40%
Correct answer is option 'B'. Can you explain this answer?
Rahul's electricity bill for January was Rs. 120, and it increased to Rs. 150 in February. What is the percentage increase in his electricity bill from January to February?
a)
20%
b)
25%
c)
30%
d)
40%
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Pj Commerce Academy answered |
The percentage increase in Rahul's electricity bill from January to February can be calculated using the formula:
Percentage Increase = ((New Value - Old Value) / Old Value) × 100%
Substituting the given values:
Percentage Increase = ((150 - 120) / 120) × 100% = (30 / 120) × 100% = 25%
Percentage Increase = ((New Value - Old Value) / Old Value) × 100%
Substituting the given values:
Percentage Increase = ((150 - 120) / 120) × 100% = (30 / 120) × 100% = 25%
If consuming an additional unit of a good leads to a decrease in total utility, what can be said about its marginal utility?- a)Marginal utility is zero.
- b)Marginal utility is negative.
- c)Marginal utility is increasing.
- d)Marginal utility is decreasing.
Correct answer is option 'B'. Can you explain this answer?
If consuming an additional unit of a good leads to a decrease in total utility, what can be said about its marginal utility?
a)
Marginal utility is zero.
b)
Marginal utility is negative.
c)
Marginal utility is increasing.
d)
Marginal utility is decreasing.
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Pj Commerce Academy answered |
When consuming an additional unit of a good leads to a decrease in total utility, it implies that the marginal utility of that additional unit is negative. This means that the satisfaction or utility derived from consuming that additional unit is less than the satisfaction from consuming the previous unit.
Priya's water bill for March was Rs. 80, and it decreased to Rs. 65 in April. What is the percentage decrease in her water bill from March to April?- a)15%
- b)20%
- c)25%
- d)30%
Correct answer is option 'C'. Can you explain this answer?
Priya's water bill for March was Rs. 80, and it decreased to Rs. 65 in April. What is the percentage decrease in her water bill from March to April?
a)
15%
b)
20%
c)
25%
d)
30%
|
KP Classes answered |
The percentage decrease in Priya's water bill from March to April can be calculated using the same formula as above.
Which of the following represents the equimarginal principle?- a)MU₁ / P₁ = MU₂ / P₂ = ... = MUᵢ / Pᵢ
- b)TU = U₁ + U₂ + ... + Uₙ
- c)MU = ΔTU / ΔQ
- d)TU = ΔU / ΔQ
Correct answer is option 'A'. Can you explain this answer?
Which of the following represents the equimarginal principle?
a)
MU₁ / P₁ = MU₂ / P₂ = ... = MUᵢ / Pᵢ
b)
TU = U₁ + U₂ + ... + Uₙ
c)
MU = ΔTU / ΔQ
d)
TU = ΔU / ΔQ
|
Learning Educators answered |
The equimarginal principle states that a consumer maximizes utility when the ratio of marginal utility to price is equal for all goods consumed. This is represented by option A, where MUᵢ represents the marginal utility of the i-th good and Pᵢ represents the price of the i-th good.
Ajay's gas bill for December was Rs. 90. If his gas bill increased by 10% in January, what was his gas bill in January?- a)Rs. 81
- b)Rs. 95
- c)Rs. 100
- d)Rs. 99
Correct answer is option 'D'. Can you explain this answer?
Ajay's gas bill for December was Rs. 90. If his gas bill increased by 10% in January, what was his gas bill in January?
a)
Rs. 81
b)
Rs. 95
c)
Rs. 100
d)
Rs. 99
|
|
KP Classes answered |
Ajay's gas bill increased by 10% in January. To find his gas bill in January, we can calculate the increase as follows:
Increase = Old Value × (Percentage Increase / 100) = 90 × (10 / 100) = Rs. 9
So, the gas bill in January was Rs. 90 (old) + Rs. 9 (increase) = Rs. 99.
Increase = Old Value × (Percentage Increase / 100) = 90 × (10 / 100) = Rs. 9
So, the gas bill in January was Rs. 90 (old) + Rs. 9 (increase) = Rs. 99.
Neha's electricity bill for November was Rs. 200. If her electricity bill decreased by 15% in December, what was her electricity bill in December?- a)Rs. 170
- b)Rs. 180
- c)Rs. 185
- d)Rs. 190
Correct answer is option 'A'. Can you explain this answer?
Neha's electricity bill for November was Rs. 200. If her electricity bill decreased by 15% in December, what was her electricity bill in December?
a)
Rs. 170
b)
Rs. 180
c)
Rs. 185
d)
Rs. 190
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Curiosity Classes answered |
Neha's electricity bill decreased by 15% in December. Using the same formula as question 1, we find the new bill amount.
Ankit's water bill for May was Rs. 75. If his water bill decreased by 10% in June, what was his water bill in June?- a)Rs. 65
- b)Rs. 67.50
- c)Rs. 70
- d)Rs. 72.50
Correct answer is option 'B'. Can you explain this answer?
Ankit's water bill for May was Rs. 75. If his water bill decreased by 10% in June, what was his water bill in June?
a)
Rs. 65
b)
Rs. 67.50
c)
Rs. 70
d)
Rs. 72.50
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Learning Educators answered |
Ankit's water bill decreased by 10% in June. Using the same formula as question 1, we find the new bill amount.
Pooja's gas bill for August was Rs. 120, and it increased by 20% in September. What was her gas bill in September?- a)Rs. 128
- b)Rs. 144
- c)Rs. 150
- d)Rs. 156
Correct answer is option 'B'. Can you explain this answer?
Pooja's gas bill for August was Rs. 120, and it increased by 20% in September. What was her gas bill in September?
a)
Rs. 128
b)
Rs. 144
c)
Rs. 150
d)
Rs. 156
|
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Learning Educators answered |
Pooja's gas bill increased by 20% in September. Using the same formula as question 1, we find the new bill amount.
Which formula represents total utility?- a)TU = ΔU / ΔQ
- b)TU = U₁ + U₂ + ... + Uₙ
- c)TU = MU / P
- d)TU = Q / P
Correct answer is option 'B'. Can you explain this answer?
Which formula represents total utility?
a)
TU = ΔU / ΔQ
b)
TU = U₁ + U₂ + ... + Uₙ
c)
TU = MU / P
d)
TU = Q / P
|
|
Learning Educators answered |
Total utility (TU) is the sum of the utilities (U) derived from consuming each unit of a good or service. This formula adds up the utility obtained from each individual unit consumed, resulting in the total utility derived from consuming all units.
According to the equimarginal principle, a consumer maximizes utility when:- a)Marginal utility is equal to price.
- b)Marginal utility is decreasing.
- c)Total utility is maximized.
- d)Income is maximized.
Correct answer is option 'A'. Can you explain this answer?
According to the equimarginal principle, a consumer maximizes utility when:
a)
Marginal utility is equal to price.
b)
Marginal utility is decreasing.
c)
Total utility is maximized.
d)
Income is maximized.
|
Nipun Tuteja answered |
The equimarginal principle states that a consumer maximizes utility when the marginal utility per dollar spent (or price) is equal across all goods and services. This means that the consumer allocates their budget in such a way that the ratio of marginal utility to price is the same for all goods consumed.
Vivek's internet bill for February was Rs. 80, and it decreased by 12.5% in March. What was his internet bill in March?- a)Rs. 70
- b)Rs. 75
- c)Rs. 80
- d)Rs. 85
Correct answer is option 'B'. Can you explain this answer?
Vivek's internet bill for February was Rs. 80, and it decreased by 12.5% in March. What was his internet bill in March?
a)
Rs. 70
b)
Rs. 75
c)
Rs. 80
d)
Rs. 85
|
|
Learning Educators answered |
Vivek's internet bill decreased by 12.5% in March. Using the same formula as question 1, we find the new bill amount.
Sunita's phone bill for April was Rs. 70, and it increased by 30% in May. What was her phone bill in May?- a)Rs. 84
- b)Rs. 91
- c)Rs. 98
- d)Rs. 105
Correct answer is option 'B'. Can you explain this answer?
Sunita's phone bill for April was Rs. 70, and it increased by 30% in May. What was her phone bill in May?
a)
Rs. 84
b)
Rs. 91
c)
Rs. 98
d)
Rs. 105
|
|
Nipun Tuteja answered |
Sunita's phone bill increased by 30% in May. Using the same formula as question 1, we find the new bill amount.
What does the law of diminishing marginal utility state?- a)The more of a good consumed, the higher the marginal utility.
- b)The marginal utility of a good increases indefinitely.
- c)As more of a good is consumed, the marginal utility decreases.
- d)There is no relationship between consumption and marginal utility.
Correct answer is option 'C'. Can you explain this answer?
What does the law of diminishing marginal utility state?
a)
The more of a good consumed, the higher the marginal utility.
b)
The marginal utility of a good increases indefinitely.
c)
As more of a good is consumed, the marginal utility decreases.
d)
There is no relationship between consumption and marginal utility.
|
|
Nipun Tuteja answered |
The law of diminishing marginal utility states that as a person consumes more units of a good or service, the additional satisfaction or utility derived from each additional unit decreases. This means that the marginal utility decreases as consumption increases.
Rohan's phone bill for September was Rs. 50, and it decreased by 20% in October. What was his phone bill in October?- a)Rs. 40
- b)Rs. 45
- c)Rs. 50
- d)Rs. 55
Correct answer is option 'A'. Can you explain this answer?
Rohan's phone bill for September was Rs. 50, and it decreased by 20% in October. What was his phone bill in October?
a)
Rs. 40
b)
Rs. 45
c)
Rs. 50
d)
Rs. 55
|
|
Curiosity Classes answered |
Rohan's phone bill decreased by 20% in October. Using the same formula as question 1, we find the new bill amount.
Chapter doubts & questions for Utility Bills - Applied Mathematics for Class 11 2025 is part of Commerce exam preparation. The chapters have been prepared according to the Commerce exam syllabus. The Chapter doubts & questions, notes, tests & MCQs are made for Commerce 2025 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests here.
Chapter doubts & questions of Utility Bills - Applied Mathematics for Class 11 in English & Hindi are available as part of Commerce exam.
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Applied Mathematics for Class 11
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