Question
Peter and Rachel can complete a project together in 20
days. Peter takes four times as long as Rachel to complete the same project alone. Find the time taken by Rachel to complete the project alone.Solution
ATQ, Let Rachel's time to complete the project alone be 'r' days. Therefore, Peter's time is '4r' days. Their combined work rate is (1/r) + (1/4r) = (1/20). 
Rachel can complete the project alone in 25 days.
How many male members are in the family?
All the six members P, Q, R, S, T and U of the family live together. P is the mother of U. P has two children. Q is the father-in-law of P. R is the so...
Answer the questions based on the information given below:
If A% means A is a male, B($) means B is a female.
A @ B means A and B are si...
How is R related to S’s brother?
There are five members in the family. J is father-in-law of Y, who is sister-in-law of W. E is mother of W. L is the only brother of W. J is married. Wh...
Answer the questions based on the information given below.
There are eight persons S, T, M, N, O, P, Q, and R in a family of three generations....
How many male members are there in the family?Â
How V related to T?
How is P related to Q?
Answer the questions based on the information given below .
There are seven persons D, E, F, G, H, I and J in a family of three generations. D i...
Relevant for Exams:
