Question

A pen coast twice that of an eraser. The pan and the eraser together ghost$ 39.( Take x to be the cost of an eraser)

Answer 1

Let (x) dollars be the cost of an eraser.
Then as given, cost of pen equals (2x) dollars.

The cost of one pen and one eraser equals 39 dollars.

So,
x + 2x = 39
3x = 39
x = 39/3
x = 13.

Therefore, cost of an eraser = 13 dollars,
cost of a pen = 26 dollars.

Hope it helps!!

That’s some pricey stationery,