Question

HELP PLEASE!!!!!!!!!!!
Cassie has a coupon for 30% off the cost of dinner at a local restaurant. With the coupon, she saves $6 on her dinner. What was the original cost of her dinner? Explain how you know.

Answer 1

The original cost of her dinner was 20 dollars.
First set up an equation,
.30x = 6
(x represents the original cost)
To isolate x, divide both sides by .30.
x = .30/6
x= 20 (the original cost)