Chain Rule Practice Test 3 with solutions

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Question : 5 of 10

Marks: +1, -0

40 men consume 60 kgs of rice in 15 days, then in how many days will 30 men consume 12 kgs of rice?

9 days
$6 1/4$ days
4 days
$3 1/4$ days

Solution:

Men	Rice (kgs)	Days
40	60	15
30	12	x

⇒

x/{15}

=

{12}/{60} × {40}/{30}

∴ x =

{12}/{60} × {40}/{30} × 15

= 4 days

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