Question

cost of 4 books=120
cost of 3 books=?​

Answer 1

Step-by-step explanation:

Cost of 4 books = 120

Cost of 1 book = 120/4

cost of 1 book = 30

So cost of 3 books= 30 × 3

cost of 3 books = 90 Rs

Hope it is useful for you.

Answer 2

90

Step-by-step explanation:

Cost of 4 Books=4

cost of 1book=120/4

= 30

cost of 3 books = 90

it's the right answer bro