Question

Mark found a shirt on sale for 25% off. When he brought it to the register, he discovered that all items in the store were on sale for an additional 20% off the sale price. He wrote this expression to represent the final cost of the shirt based on the original price,
p
.





(
1
−
0
.2
)
(
1
−
0
.25
)
p





Which of the following gives an equivalent expression and its meaning about the total discount?




0
.45
p
, which means the price of the shirt is discounted by a total of 45%


0
.45
p
, which means the price of the shirt is discounted by a total of 55%


0
.6
p
, which means the price of the shirt is discounted by a total of 40%


0
.6
p
, which means the price of the shirt is discounted by a total of 60%

Answer 1

Compute (1 − 0.2)(1 − 0.25)p = 0.8 × 0.75 p = 0.60 p. So the correct choice is:

0.6 p, which means the price of the shirt is discounted by a total of 40% (since 1 − 0.6 = 0.4).