Question

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 1

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