exam Maths Puzzle

Ram, who is half as efficient as Krish, will take 24 days to complete a work if he worked alone. If Ram and Krish worked together, how many days will they take to complete the work?

A.

16

B.

12

C.

8

D.

18

Read Solution (Total 1)

in 1 day they will together do (1/24+1/12) work
so total work will be done in 8 dys.
9 years agoHelpfull: Yes(0) No(0)

exam Other Question

Pavan builds an overhead tank in his house, which has three taps attached to it. While the first tap can fill the tank in 12 hours, the second one takes one and a half times more than the first one to fill it completely. A third tap is attached to the tank which empties it in 36 hours. Now one day, in order to fill the tank, Pavan opens the first tap and after two hours opens the second tap as well. However, at the end of the sixth hour, he realizes that the third tap has been kept open right from the beginning and promptly closes it. What will be the total time required to fill the tank?

A.

8 hours 48 minutes

B.

9 hours 12 minutes

C.

9 hours 36 minutes

D.

8 hours 30 minutes Ram starts working on a job and works on it for 12 days and completes 40% of the work. To help him complete the work, he employs Ravi and together they work for another 12 days and the work gets completed. How much more efficient is Ram than Ravi?

A.

50%

B.

200%

C.

125%

D.

100%