Question

After a 90% reduction, you purchase a new soft drink machine on sale for $64. What was the original price of the soft drink machine?

Answer 1

$640

Explanation:

Let
`x` equal the original price of the machine.

We know that $64 is 10% of
`x` because $64 is left of
`x` after the 90% reduction.

Set up an equation:

`.10x=64`

Divide by the coefficient of
`x`, which in this case is
`.10`

`x=640`