12 men can complete a work in 90 days. 30 days after they started work, 2 men left and 8 men joined. How many days will it take to complete the remaining work_____?
- 20 days
- 40 days
- 50 days
- 60 days
- 30 days
Explanation
Let the no. of days = x
12×90=30×12+(12−2+8)x
1080−360=18x
720 = 18x
x = 40 days
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