Question

If 5 books cost Rs. 75, find the cost of 12 books of the same kind.тАЛ

Answer 1

books cost

5 75

12. ?

cross multiplication

5×c=75×12

c=75×12/5

c=15×12

c=180

Answer 2

Hey mate...

Let the cost of 1 book =75÷5=15

so the cost of 1 book =15

The cost of 12 book=12×15

=180

The cost of 12 book is 180

Hope it's. help uh