Question

atul bought a pen, a notebook and a pencil box and paid rupees 50 a pencil box costs rupees 10 more than a notebook, and the pencil box and the notebook together rupees 30 more than the pen what amount did he pay for the notebook?​

Answer 1

Let the amount he paid for the notebook be x rupees

CASE 1

price of the pencil box = 10 + x

CASE 2

price of pencil box + x = price of pen + 30

From Case 1,

10 + x + x = Price of pen + 30

2x = Price of Pen + 20 ------(1)

But,

Price of pen + Price of pencil box + Price of notebook = 50

Price of pen = 50 - x - 10 - x

= 40 - 2x

From (1)

2x = 40 - 2x + 20

4x = 60

x = 15

Thus, he paid Rs. 15 for the notebook.

Answer 2

answer is rupees 15.