Time & Work

Q-TW-1Q.58

B is 4/3 times as efficient as A. If A can complete 5/8th of a given task in 15 days, what fraction of the same task would remain incomplete if B works on it independently for 10 days only ?

1. (1) 3/4
2. (2) 2/3
3. (3) 5/8
4. (4) 4/9
5. (5) 2/3

Note: Fractions printed stacked in source. Options (2) and (5) are both 2/3 as printed in source.

Q-TW-2Q.41

B is 7.5 times as efficient as A. If A can complete 6/7th of a given task in 12 days, what fraction of the same task would remain incomplete if B works on it independently for 6 days only ?

1. (1) 2/5
2. (2) 3/5
3. (3) 4/10
4. (4) 5/14
5. (5) 3/7