Question

the cost of three books and 2 pens is Rs.395 AND THE COST OF 2
BOOKS AND 5 PENS IS RS.355.FIND THE PRICES OF A BOOK AND A
PEN​

Answer 1

Answer:

Step-by-step explanation:

let the cost of books be x and pens be y

3x + 2y = 395

2x + 5y = 355

Eqn 1 * 2 => 6x + 4y = 790

Eqn 2 * 3 => 6x + 15y = 1065

Subtract 1 -2

9y = 275

y = 30.55

Substitute in Eqn 1

3x + 2(30.55) = 395

3x = 395 - 61.10

x = 333.9 / 3

x = 111.3

therefore,

cost of Book = Rs.111 and Pen = 31