Question

If 20 men assemble 8 machines in a day , how many are needed to assemble 12 machines in a day ? Direct Variation question.

Answer 1

30 men are needed to assemble 12 machines in a day.

Step-by-step explanation:

Let of no. of men required to assemble 12 machines per day be x

Given,

No. of machines to be assembled = 8, 12

No. of men required = 20, x

Using Direct Variation,

x1 / x2  =  w1/ w2

8/20 = 12/x

8x = 240

x = 240/8

x = 30

∵ 30 men would be required to assemble 12 machines per day.

Learn more: Direct Variation Method

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Answer 2

Answer:

30

Step-by-step explanation:

$\frac{20}{8}$= $\frac{X}{12}$

BY CROSS MULTIPLICCATION-

20*12=8X

240=8X

X=240/8

X=30