A family goes to a restaurant and the bill is 11200 If the p

A family goes to a restaurant, and the bill is $112.00. If the parents want to leave the wait-person a 15 percent tip, how much should they leave?

A. $15.40

B. $16.80

C. $17.25

D. $17.85

Solution

D. Calculate the cost of the two CDs:

$16.99 × 2 = $33.98

Reduce that amount by 20% by multiplying the total cost by 0.20:

0.20 × 33.98 = $6.80

Subtract $6.80 from the original cost:

$33.98 – $6.80 = $27.18

A faster way to do this (and speed is important on the ASVAB) is to multiply the original cost by 80% or 0.80 because that is the cost of the items after the discount.

0.80 × $33.98 = $27.18