30 men cut 50 trees in 10 h. If 10 men leave the job, how many trees will be cut in 15 h?

Question

Question

This question was previously asked in

SSC GD Constable (2022) Official Paper (Held On : 12 Jan 2023 Shift 2)

Answer 1

Given

30 men cut 50 trees in 10 hours

10 men leave the job

Time = 15 hours

Concept:

This problem uses the man-hour concept, where if x men can do a work in y hours, then 1 man can do the work in x × y hours.

Calculation:

1 man can cut 50 trees in 30 × 10 hours = 300 hours.

⇒ So, 20 men (since 10 men leave) can cut 50 trees in 300/20 = 15 hours.

⇒ In 15 hours, 20 men can cut 50 trees.

Therefore, the number of trees cut by 20 men in 15 hours is 50 trees.