Chain Rule Practice Test 2 with solutions

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Question : 32 of 40

Marks: +1, -0

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?

1380
1320
1260
920

Solution:

Carpenters	Hours	Days	Chairs
12	6	24	460
18	8	36	x

⇒

x/{460}

=

{36}/{24} × 8/6 × {18}/{12}

∴ x =

3/2 × 4/3 × 3/2 × 450

= 1380 chairs

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