Question

Babu and asha can do a job together in 7 days. Asha is 7/4 times as efficient as babu. The same job can be done by asha alone in

Answer 1

Answer:

11 days

Step-by-step explanation:

Let the time taken by Asha to do the job alone = X days.

Asha is 7/4 times eficient as babu.

∴ Time taken by babu alone = (7/4)X

In one day, work done by Asha = 1/X ....(1)

In one day, work done by Babu = 1/ (7/4)X = 4 / (7X) ....(2)

Both togather complete the job in 7 days.

∴we can write,

7 ×[ (1/X) + 4 / (7X) ] = 1

∴7/X + 4/X = 1

∴ 11 / X = 1

∴ X = 11

Asha alone can complete the job in  = 11 days