Question

What was the original price if: after a 70% discount it became $3b?

Answer 1

original price = 3b/(1-70%)=$10b

Answer 2

The original price was
`\$10b`

Explanation:

Let

x------> the original price

we know that

`100\%-70\%=30\%=(30)/(100)=0.30`

`0.30x=3b`

solve for x

Divide by
`0.30` both sides

`x=3b/0.30=\$10b`