If 7 spiders make 7 webs in 7 days, then 1 spider will make 1 web in how many days?

Q: If 7 spiders make 7 webs in 7 days, then 1 spider will make 1 web in how many days?

Let the required number days be x. Less spiders, More days (Indirect Proportion) Less webs, Less days (Direct Proportion) S p i d e r s 1 : 7 W e b s 7 : 1 ⋮ ⋮ 7 : x => 1 * 7 * x = 7 * 1 * 7 => x= 7

1
3
7
14

Correct Answer: 7

Explanation:

Let the required number days be x.

Less spiders, More days (Indirect Proportion)

Less webs, Less days (Direct Proportion)

$S p i d e r s 1 : 7 W e b s 7 : 1 ⋮ ⋮ 7 : x$

=> 1 * 7 * x = 7 * 1 * 7

=> x= 7

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