Question

if the cost of 20 notebooks rupees 500 find the cost of 15 such

Answer 1

Answer:

Please mark me as brain list

Step-by-step explanation:

Cost of 20 notebooks = ₹500

cost of 1 notebook = 500/20

= ₹25

Cost of 15 notebooks = 15×25

₹375

Answer 2

Answer:

find the perimeter of square with side 20cm