If 12 men working 8 hours a day complete the work in 10

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If 12 men working 8 hours a day complete the work in 10 days, how long would 16 men working
7 1
2
hours a day take to complete the same work?

1. 7
2. 6
3. 10
4. 8

Correct Option: D

Using Rule 1,

⇒ 16 ×	15	× x = 12 × 8 × 10
	2

⇒ 8 × 15 × x = 12 × 8 × 10

⇒ x =	12 × 8 × 10	= 8 days
	8 × 15