13 men can complete a work in 7 days. After 3 days, 4 more men joined them. How many days will they now take to complete the remaining work?
Show answer & explanation
Correct answer: D
Explanation
The correct answer is Option 4 i.e. days
Total Work =13 men × 7 days = 91 work units
The work done in 3 days = 13 men × 3 days = 39 work units
Remaining Work = 91 work units − 39 work units = 52 work units
New number of men = 13 + 4 = 17 men
Days to Complete Remaining Work = = days