If 12 carpenters working 6 hours a day can make 460 chairs

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If 12 carpenters working 6 hours a day can make 460 chairs in 240 days, then the number of chairs made by 18 carpenters in 36 days each working 8 hours a day is

1. 92
2. 132
3. 138
4. 126

Correct Option: C

Using Rule 1,

⇒ 12 × 6 × 240 × x
⇒ = 18 × 8 × 36 × 460

⇒ x =	18 × 8 × 36 × 460	= 138
	12 × 6 × 240