Question

10 men can reap a field in 20 days. 10 men reaped the field for 10 days and after 10 days 10 more men join them. In how many days will the work be finished?

• A. 15 days
• B. 25 days
• C. 30 days
• D. 12 days

Answer 1

The correct option is A

15 days

Total number of work days required =10 x 20 = 200

Since 10 men worked for 10 days, 10 x 10 = 100 days work is already done.
So, 200 - 100 = 100 days of work is left.

Once, 10 more men joined, total number of workers=20
So, number of days required more $=\frac{100}{20}=5$

Thus, total number of days = 10 + 5 = 15.