4. If 10 men, working 7 hours a day dig. 7 a trench 147m long, how many men working 8 hours a day will dig a tread 8 168m long of the same depth and breadh as the first in the same number of day?
Answers
Answered by
0
Answer:
Working 7 hours a day 147 m long trench can be dig by = 10 men
Working 1 hour a day 147m long trench can be dig by = 10∗7
working 1 hour a day 1 m long trench can be dig by = 10∗7/147
working 8 hours a day 1 m long trench be dig by = 10×7/147×8
working 8 hours a day 160 m long trench can be dig by =
147×8
10×7×160
=9.523
So, 10 members are required
Similar questions