3. A waitress earns 15% in gratuity on the total price of her customer's meals. She also earns $5 per hour. If the waitress's customers spend $200 on food and the waitress
works for 4 hours, how much would she earn in total?
a) $30
b) $50
c) $230
d) $250

first you find 15% of $200

15/100×200=$30

then you find the total money she earned for the hours she worked

4×5=$20

then you add the amounts

$20+$30=$50

step-by-step explanation:

the multiplicative inverse of a fraction a/b is b/a. for the multiplicative inverse of a real number, divide 1 by the number. for example, the reciprocal of 5 is one fifth 1/5 or 0.2, and the reciprocal of 0.25 is 1 divided by 0.25, or 4.