Question

A rental plan at a video store costs $30 a month. it is on sale for 35% off the original price. what is the sale price of the plan?

Answer 1

Answer: $19.50

Explanation:
For this problem, we say that $30 per month is the full price (or 100%). So if we get a sale on the rental plan of 35% off, then this means we pay 100% - 35% = 65%. So we are paying 65% of the total price. To get this value we can say the following:

Paid = 0.65 * $30
Paid = $19.5

So you pay $19.50 for the rental plan on sale.

Another way to work this is with proportions. Consider x to be the amount you pay.

x / 30 = 65 / 100
x = 30 * 65 / 100
x = 19.5

Hope this helps.

Cheers.