Chain Rule Practice Test 1 with solutions

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Question : 18 of 40

Marks: +1, -0

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

7
$7/6$
3
1

Solution:

Spiders	Webs	Days
7	7	7
1	1	x

⇒

x/7

=

1/7 × 7/1

∴ x =

1/7 × 7/1 × 7

= 7 days

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