Question

10) → Michael paid $8.40 for a DVD after having been given a 30% discount.

What was the presale price of the DVD?
On my elementary math class on college I Don’t know where to start this needs to be shown full work

Answer 1

Explanation:

If the presale price is
`x`,

then
`x*(1-0.30)=8.40\\0.70x=8.40\\x=8.40/0.70=12.0\\`

Thus the presale price is $12.0