Question

Alex bought six books priced at $8 each. He got a discount of 20% off the total cost. How many did Alex pay for the books, write your answer up to two decimal places

Answer 1

The original price was 100%. If 20% was taken off, 80% remains. So, he paid 80% of the original price. 80% is the same as 0.8.
Multiplying (8 x 6) by 0.8 will give the answer.

`(8 * 6) * 0.8\\=48 * 0.8\\=38.40`
include the last zero because it asked for the answer up to two decimal places.