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All countries
240,188,856
Confirmed
Updated on October 14, 2021 6:29 pm
All countries
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Recovered
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Deaths
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# If 7 Spiders Make 7 Webs in 7 Days then One Spider will Make One Web in How Many Days?

### Computer MCQs Series for PPSC, FPSC – Most Repeated MCQs | Set 4

• If 7 spiders make 7 webs in 7 days.
• Days required by one spider to make one web will be figure out in this way.

## Explanation

Three given entities here are

1. Spiders
2. Web
3. Days

To determine the relation here, let suppose; Days required by one spider to make one web = y

Case I

Spiders      Days

7                 7

1                 y

• Seven spiders requires less days.
• One spider will require more days.

This clearly indicates that there is inverse relation.

Direct/Indirect relation tells how the equation will be written.

1 : 7  ::  7 : y ________ (i)

Case II

Web           Days

7                 7

1                 y

• 7 (seven) web requires more days.
• 1 (one) web would require less days.

This clearly indicates that there is direct relation.

Direct/Indirect relation tells how the equation will be written.

7 : 1  ::  7 : y ________ (ii)

By (i) and (ii)

1 : 7 :: 7 : y

7 : 1

7 x 1 x 7 = 7 x 1 x y ________ (A)

After simplifying equation (A), we can easily figure out the value of y (y = 7)

## To Find

Days required by one spider to make one web = ?

## Solution

### Method I

Let suppose

Days required by one spider to make one web = y

Spider        Web           Days

7                 7                 7

1                 1                  y

• Relation between spider and days is inverse.
• Relation between web and days is direct so;

1 : 7 :: 7 : y

7 : 1

7 x 1 x 7 = 7 x 1 x y

49 x 1 = 7y

7y = 49

y = 49/7

y = 7 days

Days required by one spider to make one web = 7 days answer

### Method II

Days required by 7 spiders to make 7 web = 7 days

Days required by 7 spiders to make 1 web = 7/7 days

Days required by 7 spiders to make 1 web = 1 day

Days required by 1 spider to make 1 web = 1 x 7 days

Days required by 1 spider to make 1 web = 7 days

Days required by one spider to make one web = 7 days answer

### Conclusion

If 7 spiders make 7 webs in 7 days then one spider will make one web in 7 days.

### Computer MCQs Series for PPSC, FPSC – Most Repeated MCQs | Set 6

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