Defence Exam > Defence Questions > A milkman mixes water with milk and sells the...
Start Learning for Free
A milkman mixes water with milk and sells the mixture at the cost price of pure milk. The volume of the water in litres present in each litre of mixture to get a 20% profit is
- a)
- b)Cannot be calculated without knowing the cost price of milk
- c)1/6
- d)1/5
Correct answer is option 'C'. Can you explain this answer?
| FREE This question is part of | Download PDF Attempt this Test |
Verified Answer
A milkman mixes water with milk and sells the mixture at the cost pric...
Let,
Cost price of 1 litre pure milk = a
Volume of water mixed in 1 litre milk = b
∴ Cost price of water mixed 1 litre milk = a - a × b
Profit = 20%
Selling price = Cost price of 1 litre pure milk = a
∵ Selling price = Cost price + Profit
⇒ a = (a - a × b) + 0.20 × (a - a × b)
⇒ (a - a × b) × 1.20 = a
⇒ (1 - b) × 1.20 = 1
⇒ 1.20b = 1.20 - 1
⇒ b = 0.20/1.20 = 20/120 = 1/6
∴ Volume of water mixed in 1 litre milk = 1/6 litre
Alternate solution →
The above solution is done by cost price method but there is one more method to solve this type of questions i.e by quantity method
Let,
Initial quantity of pure milk = A
Quantity of water mixed = Quantity of pure milk replaced = B
The milkman actually sells (A - B) quantity of pure milk but proposes that he is selling A quantity of pure milk.
Profit = (Proposed quantity sold - Actual quantity sold ) / Actual quantity sold
20/100 = (A - ( A-B))/ (A-B)
20/100 = (B/(A - B))
So if B = 20 ⇒ (A -B) = 100 ⇒ A = 120
∴ The volume of the water in present in each litre of mixture = B/A = 20/120 = 1/6
Cost price of 1 litre pure milk = a
Volume of water mixed in 1 litre milk = b
∴ Cost price of water mixed 1 litre milk = a - a × b
Profit = 20%
Selling price = Cost price of 1 litre pure milk = a
∵ Selling price = Cost price + Profit
⇒ a = (a - a × b) + 0.20 × (a - a × b)
⇒ (a - a × b) × 1.20 = a
⇒ (1 - b) × 1.20 = 1
⇒ 1.20b = 1.20 - 1
⇒ b = 0.20/1.20 = 20/120 = 1/6
∴ Volume of water mixed in 1 litre milk = 1/6 litre
Alternate solution →
The above solution is done by cost price method but there is one more method to solve this type of questions i.e by quantity method
Let,
Initial quantity of pure milk = A
Quantity of water mixed = Quantity of pure milk replaced = B
The milkman actually sells (A - B) quantity of pure milk but proposes that he is selling A quantity of pure milk.
Profit = (Proposed quantity sold - Actual quantity sold ) / Actual quantity sold
20/100 = (A - ( A-B))/ (A-B)
20/100 = (B/(A - B))
So if B = 20 ⇒ (A -B) = 100 ⇒ A = 120
∴ The volume of the water in present in each litre of mixture = B/A = 20/120 = 1/6
|
Explore Courses for Defence exam
|
|
Similar Defence Doubts
A milkman mixes water with milk and sells the mixture at the cost price of pure milk. The volume of the water in litres present in each litre of mixture to get a 20% profit isa)b)Cannot be calculated without knowing the cost price of milkc)1/6d)1/5Correct answer is option 'C'. Can you explain this answer?
Question Description
A milkman mixes water with milk and sells the mixture at the cost price of pure milk. The volume of the water in litres present in each litre of mixture to get a 20% profit isa)b)Cannot be calculated without knowing the cost price of milkc)1/6d)1/5Correct answer is option 'C'. Can you explain this answer? for Defence 2024 is part of Defence preparation. The Question and answers have been prepared according to the Defence exam syllabus. Information about A milkman mixes water with milk and sells the mixture at the cost price of pure milk. The volume of the water in litres present in each litre of mixture to get a 20% profit isa)b)Cannot be calculated without knowing the cost price of milkc)1/6d)1/5Correct answer is option 'C'. Can you explain this answer? covers all topics & solutions for Defence 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for A milkman mixes water with milk and sells the mixture at the cost price of pure milk. The volume of the water in litres present in each litre of mixture to get a 20% profit isa)b)Cannot be calculated without knowing the cost price of milkc)1/6d)1/5Correct answer is option 'C'. Can you explain this answer?.
A milkman mixes water with milk and sells the mixture at the cost price of pure milk. The volume of the water in litres present in each litre of mixture to get a 20% profit isa)b)Cannot be calculated without knowing the cost price of milkc)1/6d)1/5Correct answer is option 'C'. Can you explain this answer? for Defence 2024 is part of Defence preparation. The Question and answers have been prepared according to the Defence exam syllabus. Information about A milkman mixes water with milk and sells the mixture at the cost price of pure milk. The volume of the water in litres present in each litre of mixture to get a 20% profit isa)b)Cannot be calculated without knowing the cost price of milkc)1/6d)1/5Correct answer is option 'C'. Can you explain this answer? covers all topics & solutions for Defence 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for A milkman mixes water with milk and sells the mixture at the cost price of pure milk. The volume of the water in litres present in each litre of mixture to get a 20% profit isa)b)Cannot be calculated without knowing the cost price of milkc)1/6d)1/5Correct answer is option 'C'. Can you explain this answer?.
Solutions for A milkman mixes water with milk and sells the mixture at the cost price of pure milk. The volume of the water in litres present in each litre of mixture to get a 20% profit isa)b)Cannot be calculated without knowing the cost price of milkc)1/6d)1/5Correct answer is option 'C'. Can you explain this answer? in English & in Hindi are available as part of our courses for Defence.
Download more important topics, notes, lectures and mock test series for Defence Exam by signing up for free.
Here you can find the meaning of A milkman mixes water with milk and sells the mixture at the cost price of pure milk. The volume of the water in litres present in each litre of mixture to get a 20% profit isa)b)Cannot be calculated without knowing the cost price of milkc)1/6d)1/5Correct answer is option 'C'. Can you explain this answer? defined & explained in the simplest way possible. Besides giving the explanation of
A milkman mixes water with milk and sells the mixture at the cost price of pure milk. The volume of the water in litres present in each litre of mixture to get a 20% profit isa)b)Cannot be calculated without knowing the cost price of milkc)1/6d)1/5Correct answer is option 'C'. Can you explain this answer?, a detailed solution for A milkman mixes water with milk and sells the mixture at the cost price of pure milk. The volume of the water in litres present in each litre of mixture to get a 20% profit isa)b)Cannot be calculated without knowing the cost price of milkc)1/6d)1/5Correct answer is option 'C'. Can you explain this answer? has been provided alongside types of A milkman mixes water with milk and sells the mixture at the cost price of pure milk. The volume of the water in litres present in each litre of mixture to get a 20% profit isa)b)Cannot be calculated without knowing the cost price of milkc)1/6d)1/5Correct answer is option 'C'. Can you explain this answer? theory, EduRev gives you an
ample number of questions to practice A milkman mixes water with milk and sells the mixture at the cost price of pure milk. The volume of the water in litres present in each litre of mixture to get a 20% profit isa)b)Cannot be calculated without knowing the cost price of milkc)1/6d)1/5Correct answer is option 'C'. Can you explain this answer? tests, examples and also practice Defence tests.
|
|
Explore Courses for Defence exam
|
|
Signup for Free!
Signup to see your scores go up within 7 days! Learn & Practice with 1000+ FREE Notes, Videos & Tests.
|
© EduRev
|
Education Revolution
|
Follow Us
|
Signup to see your scores
go up within 7 days!
Access 1000+ FREE Docs, Videos and Tests
Takes less than 10 seconds to signup