Question

A man bought 3280 books in a month and sold 2460 books . what percent of book he could not sell?​

Answer 1

Percent of book he could not sell is 25 percent

Step-by-step explanation:

GIVEN

Total Value = 3280

Part Value = 2460

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We know that,

Percent of book he could not sell

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We know that,

Percent = Part Value / Total Value × 100

Percent = 2460 / 3280 × 100

Percent = 0.75 × 100

Percent = 75

Percent = 75%

He sold 75% of books

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Now

Let's find percent of book he could not sell

Percent of book he could not sell = 100 - Percent of book he sold

Percent of book he could not sell = 100 - 75

Percent of book he could not sell = 25

Percent of book he could not sell = 25%

Percent of book he could not sell is 25 percent

Answer 2

Question :

A man bought 3280 books in a month and sold 2460 books . what percent of book he could not sell?

Given:

• Total no. of books bought = 3280(Total value)
• No. of books he sold = 2460(part value)

To find:

• Percent of books he cannot sell.

Solution:

$\boxed{ Percent \: = \dfrac{Part \: value }{Total \: value } \times 100 }$

$: \implies \tt {Percent = \frac{2460}{3280} \times 100 }$

$: \implies \tt {Percent = \: 0.75 \times 100}$

$: \implies$Percentage = 75%

To find the no. of books he cannot sold we need to subtract Percentage of books he sold from the total percentage.

So,

Percentage of books he cannot sold = 100 - 75

Percentage of books he cannot sold = 25%