One factor of a fixed product rises by r%: percent reduction needed in the other
This type of question, asked 4 times: CDS 2 2017, CDS 1 2018, CDS 1 2023, CDS 2 2024. All 4 questions below, oldest first.
Try each one first, then open its answer.
Question 1
CDS 2 2017
44When prices rise by 12%, if the expenditure is to be the same, what is the percentage of consumption to be reduced ?Tap an option to check your answer.
Question 2
CDS 1 2018
21If the price of wheat rises by 25%, then by how much percent must a man reduce his consumption in order to keep his budget the same as before?Tap an option to check your answer.
Question 3
CDS 1 2023
66If the length of a rectangle is increased by , then by what percent should the width of the rectangle be decreased in order to maintain the same area ?Tap an option to check your answer.
Question 4
CDS 2 2024
65A question is given followed by two statements I and II. Consider the Question and the Statements and mark the correct option. Question : If the price of petrol goes up by 20%, by what percentage should the consumption be reduced so that the expenditure remains the same ? Statement-I : Price of petrol per litre was Rs. 90 Statement-II : Consumption was 24 litre before price hike Which one of the following is correct in respect of the above Question and the Statements ?Tap an option to check your answer.