You spend 1/2 of your allowance on Monday. On Tuesday, you spend 1/2 of the amount you have left. On Wednesday, you spend half of what remains. What fraction of your allowance do you have left?

Answer 1

1/2 + (1/2 * 1/2) + (1/2 * 1/2 * 1/2)

1/2 + 1/4 + 1/8

4/8 + 2/8 + 1/8 = ? you've spent.

Subtract that from 8/8

Answer 2

1 1/2 is the answer