Question

david spent 2/5 of his money on a storybook. The storybook cost $20. How much money did he have at first

Answer 1

50 dallors hope this help

Answer 2

If the storybook cost $20, and it was also 2/5 of his money, then 2/5 of his money is $20. In other words:
2x/5 =20.

Multiplying both sides by 5, we get:
2x = 100.

If we divide both sides by 2, then we're left with:
x = 50.

David had $50 at first.