Question

Jasmine has some money. Mother gave her 7 rupees. Jasmine now has 10 rupees. How much did she have to start with?

Answer 1

Let us suppose Jasmine had y rupees.

∴ y + 7 = 10

∴ y + 7 - 7 = 10 - 7

∴ y + 0 = 3

∴ y = 3

It means that Jasmine had 3 rupees to start with.