Question

If 4 books cost ₹ 28, what will be the cost of 20 books? 7 class
plsssss ratio and proportion

Answer 1

Step-by-step explanation:

4 books cost = $28

Then, cost of 20 books =7x20

$ =140.

Then, cost of a book =28/4

$=7

Answer 2

Answer:

GIVEN : -

4 Books Cost is Rs. 28

TO FIND : -

Cost of 20 Books

SOLUTION : -

BY , Unitary Method : --

Since , 4 Books Cost Rs. 28

Therefore ,

1 Book Cost : -

=> Rs. 28 / 4

=> Rs. 7

So , Cost of 20 Books will be : -

=> 20 × Price of 1 Book

=> 20 × Rs. 7

=> Rs. 140