Question

How much does a customer pay for three memory cards if the store increases the percent of discount in part (b) by 2%.Part (b) was 5%

Answer 1

discount was 2%

Cost of 3 mem cards

A + B + C = X

2% of X = X+ (2/100)X

Then

Cost of 2 mem cards= $47.50

5% of $47.50 = $2.375

Cost of 3 mem cards = 47.50 + 47.50/2= 47.50 + 23.75= $71.25

Now find 2% 0f 71.25

= (2/100)x71.25= $1.425

Then

customer pays

$71.25 - $1.425= 69.83

Answer is

customer pays $69.83 for three memory cards