Question

The cost of a Maths book is 5 times the cost of a Science book. If a man purchases 5 Science books and 3. Maths books and pay Rs 300 to the shopker, find the cost of a Science and Maths book.​

Answer 1

Answer:

Let the cost of maths book be  

and the cost of science book be  

___________________________

Adding equation(1) and (2) we get,

Putting value of x in equation (1) we get,

_____________________________

Hence, cost of a Maths book is ₹ 75

and cost of a science book is ₹ 15.

Step-by-step explanation:

Answer 2

Answer:

Let the cost of a Science book = x Then, the cost of a Maths book = 5x

Cost of 5 science books = 5x

Cost of 3 maths books = 5x × 3

= 15x

A.T.Q

5x + 15x = 300

20x = 300

x = 300/20

x = 15

➡️Cost of a Science book = ₹15

➡️Cost of a Maths book = 15×5

= ₹75

♥️Hope it will help you.♥️