Question

if if cost of 8 book is 680 so cost of 15 sach book​

Answer 1

Answer:

cost of 8 book is 680

so cost of one book is 680/8=85

now total cost of 15such books is 15*85=1275

Answer 2

Answer:

1275

Step-by-step explanation:

Using Unitary Method-

689 divided by 8 = 85

85 multiplied by 15= 1275