Question

1. A book was on sale for 40% off its original price. If the sale price of the book was

$18.00, what was the original price of the book? (Assume there is no sales tax.)
​

Answer 1

Answer:

Brainliest Please

Step-by-step explanation:

let the Original price be x

40% of x = (40/100)×x = 2x/5

ATP :

$x - \frac{2x}{5} = 18 \\ \\ \frac{5x - 2x}{5} = 18 \\ \\ 3x = 18 \times 5 \\ \\ 3x = 90 \\ \\ \\ x = \frac{90}{3} \\ \\ x = 30$