Question

The price of 2 pens and 5 books is ₹240 and the price of 4 pens and 3 books is ₹200. Find the price of a pen and a book.

(this sum belongs from 9th std algebra :- linear equations in two variables)​

Answer 1

Answer:

Let the cost of a pen is Rs. x. and cost of a book is Rs.y. , accordingly:-

3x +2y = 225. ……………(1).

4x+3y = 320. ……………..(2).

Multiplying eqn.(1) by 3 and eqn.(2) by. 2. and subtracting.

9.x + 6.y = 675. …………… (3)

8x +. 6y. = 640. …………….(4).

x = 35. , Answer.

Step-by-step explanation:

Hope it helps you

Answer 2

Answer:

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