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RS Aggarwal Solutions Class 7 Mathematics Solutions for Unitary Method Exercise 9B in Chapter 9 - Unitary Method

Question 5 Unitary Method Exercise 9B

A girl can finish a book in 25 days if she reads 18 pages of it every day. How many days will she take

to finish it, if she reads 15 pages every day?

Answer:

Solution:-

From the question,

Number of days taken to finish the book if she reads 18 pages every day = 25

Number of days taken to finish the book if she read 1 page every day = (18 × 25)

∴Number of days taken to finish the book if she reads 15 pages every day = (18 × 25)/ 15

= 30 days

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