Answer:
$178
Step-by-step explanation:
Let's say the original price is x. If there's a 15% discount on x, we have the expression:
x - 15% * x
We know that the discounted price is $151.30, so set this equal:
x - 15% * x = 151.30
x * ( 1 - 15%) = 151.30
Remember that % just means "out of 100", so 15% = 15/100:
x * (1 - 15/100) = 151.30
x * (1 - 0.15) = 151.30
x * 0.85 = 151.30
x = 151.30 / 0.85 = 178
The original price was thus $178.
