Question
A and B can do a job in 20 days and 30 days,
respectively. A and B work together for 5 days, and then A leaves. After how many more days will B complete the remaining work?Solution
Work done by A per day = 1/20, Work done by B per day = 1/30. In 5 days, work done by A and B together = 5 × (1/20 + 1/30) = 5 × (3/60 + 2/60) = 5 × 5/60 = 25/60 = 5/12 of the work. Remaining work = 1 - 5/12 = 7/12 of the work. Now, B will complete the remaining work alone. Work done by B per day = 1/30. Time taken by B to complete the remaining work = (7/12) ÷ (1/30) = (7/12) × 30 = 17.5 days. Correct option: c
Q is the daughter of A. P is the wife of A. Q has two children S and T. S is the son of R. M is the brother of Q. T is the sister of S. How is M related...
Answer the questions based on the information given below:
There are seven members D, E, F, G, H, I, and J in a family of three generation. E...
Answer the following questions based on the information given below.
There are eight persons G, H, I, J, K, L, M and N in a family of three gen...
If expression ‘F % G # H $ I & J’ is true, then how is mother in law of J related to V, who is unmarried maternal uncle of H?
How is R related to S’s brother?
How is B related to A?
Who among the following is married to F?
Answer the questions based on the information given below.
In a family of three generations, there are seven persons C, D, E, F, G, H and I. F ...
- How is M related to O?
Introducing a woman, a man said, 'Her sister’s mother is the only daughter of my grandmother.' How is the man related to this woman? Â
Relevant for Exams:
