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A boy read 3/8 of a …

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A boy read 3/8 of a book on one day and 4/5 of the remainder on another day if there were 30 pages unread how many pages did the book contain

Posted by Shubhi Agrawal 4 years, 5 months ago

CBSE > Class 07 > Mathematics

2 answers

Sia ? 4 years, 5 months ago

After reading 3/8 of the book, the remaining fraction 1 - 3/8 = 5/8
The boy then reads 4/5 of 5/8 = 4/5 x 5/8 = 1/2
Total fraction read = 3/8 + 1/2 = 7/8
The unread fraction = 1 - 7/8 = 1/8 This is equivalent to 30 pages
∴ The book has 30 ÷ 1/8 = 240 pages

1Thank You

Subhanita Sen 4 years, 5 months ago

240 pages.

1Thank You

ANSWER

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CBSE > Class 07 > Mathematics