Question

Anil can do a job in 10 days. Sunn is 40% more efficient than Anil. Find the no. of days required by Sunil to do the same job.

Options

• `7 1/7` days

• `6 2/3` days

• `5 1/4` days

• None of these

Answer 1

`7 1/7` days

Explanation:

Efficiency of Anil `1/10 xx 100` = 10%

Sunil is 40% more efficient, hence efficiency of sunil = 14% i.e., [10% + 40% of 10%]

∴ Sunil will take `100/14` days to do the same job individually. & `100/14 = 7 1/7` days