Question

Ravi bought 5 notebooks and 3pens for 65 rupees. Raju bought 2notebooks and 6pens for 50 rupees. caluculate the price of one note book and one pen? ​

Answer 1

Answer:

Step-by-step explanation:

let the cost of one notebook is x and the cost of one pen is y

according to our question ;

5x + 3y = 65----(1)

2x + 6y = 50----(2)

by using elimination method,

multiply Eqn(1) with 2 and multiply Eqn (2) with 5

10x + 6y = 130

10x + 30y = 250

subtracting this we will get

24y = 120

y = 120/24

y = 5

substitute y value in eqn (1)

5x + 3(5) = 65

5x + 15 = 65

5x = 50

x = 50/5

x = 10

SO THE COST OF ONE NOTEBOOK IS ₹10 AND THE COST ONE PEN IS ₹5