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Test: Utility Bills - Commerce MCQ


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15 Questions MCQ Test Applied Mathematics for Class 11 - Test: Utility Bills

Test: Utility Bills for Commerce 2024 is part of Applied Mathematics for Class 11 preparation. The Test: Utility Bills questions and answers have been prepared according to the Commerce exam syllabus.The Test: Utility Bills MCQs are made for Commerce 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Test: Utility Bills below.
Solutions of Test: Utility Bills questions in English are available as part of our Applied Mathematics for Class 11 for Commerce & Test: Utility Bills solutions in Hindi for Applied Mathematics for Class 11 course. Download more important topics, notes, lectures and mock test series for Commerce Exam by signing up for free. Attempt Test: Utility Bills | 15 questions in 15 minutes | Mock test for Commerce preparation | Free important questions MCQ to study Applied Mathematics for Class 11 for Commerce Exam | Download free PDF with solutions
Test: Utility Bills - Question 1

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?

Detailed Solution for Test: Utility Bills - Question 1

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%

Test: Utility Bills - Question 2

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?

Detailed Solution for Test: Utility Bills - Question 2

To find the percentage decrease, use the formula:
Percentage Decrease = (Original Amount - New Amount) / Original Amount × 100
Here, the original amount (March) = Rs. 80 and the new amount (April) = Rs. 65.
Percentage Decrease = (80 - 65) / 80 × 100 = 15 / 80 × 100 = 18.75%

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Test: Utility Bills - Question 3

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?

Detailed Solution for Test: Utility Bills - Question 3

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.

Test: Utility Bills - Question 4

Deepika's internet bill for June was Rs. 60, and it increased by 25% in July. What was her internet bill in July?

Detailed Solution for Test: Utility Bills - Question 4

Deepika's internet bill increased by 25% in July. Using the same formula as question 1, we find the new bill amount.

Test: Utility Bills - Question 5

Rohan's phone bill for September was Rs. 50, and it decreased by 20% in October. What was his phone bill in October?

Detailed Solution for Test: Utility Bills - Question 5

Rohan's phone bill decreased by 20% in October. Using the same formula as question 1, we find the new bill amount.

Test: Utility Bills - Question 6

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?

Detailed Solution for Test: Utility Bills - Question 6

Neha's electricity bill decreased by 15% in December. Using the same formula as question 1, we find the new bill amount.

Test: Utility Bills - Question 7

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?

Detailed Solution for Test: Utility Bills - Question 7

Ankit's water bill decreased by 10% in June. Using the same formula as question 1, we find the new bill amount.

Test: Utility Bills - Question 8

Pooja's gas bill for August was Rs. 120, and it increased by 20% in September. What was her gas bill in September?

Detailed Solution for Test: Utility Bills - Question 8

Pooja's gas bill increased by 20% in September. Using the same formula as question 1, we find the new bill amount.

Test: Utility Bills - Question 9

Vivek's internet bill for February was Rs. 80, and it decreased by 12.5% in March. What was his internet bill in March?

Detailed Solution for Test: Utility Bills - Question 9

Vivek's Internet Bill Calculation
Original Bill in February: Rs. 80
Percentage Decrease: 12.5%
Calculation:

  • Decrease = (12.5 / 100) × 80 = Rs. 10
  • March Bill = 80 - 10 = Rs. 70

Vivek's Internet Bill in March: Rs. 70

Test: Utility Bills - Question 10

Sunita's phone bill for April was Rs. 70, and it increased by 30% in May. What was her phone bill in May?

Detailed Solution for Test: Utility Bills - Question 10

Sunita's phone bill increased by 30% in May. Using the same formula as question 1, we find the new bill amount.

Test: Utility Bills - Question 11

What does the law of diminishing marginal utility state?

Detailed Solution for Test: Utility Bills - Question 11

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.

Test: Utility Bills - Question 12

According to the equimarginal principle, a consumer maximizes utility when:

Detailed Solution for Test: Utility Bills - Question 12

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.

Test: Utility Bills - Question 13

If consuming an additional unit of a good leads to a decrease in total utility, what can be said about its marginal utility?

Detailed Solution for Test: Utility Bills - Question 13

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.

Test: Utility Bills - Question 14

Which of the following represents the equimarginal principle?

Detailed Solution for Test: Utility Bills - Question 14

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.

Test: Utility Bills - Question 15

Which formula represents total utility?

Detailed Solution for Test: Utility Bills - Question 15

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.

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