Day 60: CDS Maths

5 questions. Try each one first, then open its answer.

Question 1
Time and Work. Asked 2 times: CDS 1 2017*, CDS 2 2018 (* = numbers or wording changed that year) See all 2 times it was asked
44 $X and Y together can finish a job in 6 days. X can alone do the same job in 12 days. How long will Y alone take to do the same job ?$
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Question 2
Time, Speed and Distance. Asked 2 times: CDS 2 2017*, CDS 2 2018 (* = numbers or wording changed that year) See all 2 times it was asked
29 $A cyclist covers his first 20 km at an average speed of 40 kmph, another 10 km at an average speed of 10 kmph and the last 30 km at an average speed of 40 kmph. Then the average speed of the entire journey is$
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Question 3
Percentage, Profit and Loss. Asked 2 times: CDS 2 2017*, CDS 1 2018 (* = numbers or wording changed that year) See all 2 times it was asked
21 $If the price of wheat rises by 25%, then by how much percent must a man reduce his consumption in order to keep his budget the same as before?$
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Question 4
Time and Work. Asked 2 times: CDS 1 2017*, CDS 1 2018 (* = numbers or wording changed that year) See all 2 times it was asked
25 $A work when done by 10 women is completed in 12 days. The same work can be completed in 8 days when done by 5 men. How many days will it take to complete when 6 women and 3 men are employed to perform the same job?$
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Question 5
Quadratic Equations. Asked 2 times: CDS 1 2017*, CDS 2 2017 (* = numbers or wording changed that year) See all 2 times it was asked
5 $m$
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Question 1

Question 2

Question 3

Question 4

Question 5