43.
If 12 carpenters, working 6 hours a day, can make 460 chairs in 24 days, how
many chairs will 18 carpenters make in 36 days, each working 8 hours a day?
[A]
1260
[C]
920
[B]
1320
[D]
1380
Answer : D
Explanation :
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Let
the required number of chairs be x. Then,
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More
Carpenters, More Chairs (Direct Proportion)
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More
hours per day, More chairs (Direct Proportion)
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More
days, More chairs (Direct Proportion)
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Carpenters
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12
: 18
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Hours
per day
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6
: 8
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Days
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24
: 36
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::
460 : x
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(12
x 6 x 24 x x) = (18 x 8 x 36 x 460)
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(18 x 8 x 36 x 460)
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(12 x 6 x 24)
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=
1380
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Required
number of chairs = 1380.
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