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

Answer:

375

Step-by-step explanation:

because using the method of multiplication .multiply them each other

Answer 2

Answer:

Just do it by the formula X¹Y¹=X²Y²

no.of pages she read everyday=18

no. of days she took to finish the book=25

X¹Y¹=18×25=450

we need to find the days of she read 15 pages everyday

X²Y²=15×Y¹

X¹Y¹=X²Y²

=15Y¹=450

Y¹ or the days =450/15

=30 days