Aptitude:: Chain Rule

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4 mat-weavers can weave 4 mats in 4 days. At the same rate, how many mats would be woven by 8 mat-weavers in 8 days?

A. 4 B. 8
C. 12 D. 16

Answer: Option D

Explanation:

Let the required number of bottles be x.

More weavers, More mats (Direct Proportion)

More days, More mats (Direct Proportion)

Wavers 4 : 8 :: 4 : x
Days 4 : 8

 4 x 4 x x = 8 x 8 x 4

 x = (8 x 8 x 4)
(4 x 4)

 x = 16.


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