Answer:
a. $2.12
b. $6.45
c. $38.81
Step-by-step explanation:
a.
I'll convert 30.24 and 7% into fractions.
756/25 * 7/100
<em>Cross cancel 756 and 100 (GCF is 4)</em>
189/25 * 7/25
<em>Convert above into a single fraction</em>
(189 * 7)/(25 * 25)
<em>Multiply 189 by 7, then 25 by 25.</em>
1323/625
<em>Divide, then round to the nearest cent</em>
$2.1168 ≈ $2.12 in sales tax
b.
Like before, I'll convert $32.26 ($30.24 + $2.12) and 20% into fractions.
1613/50 * 1/5
<em>Multiply 50 by 5.</em>
1613/250
<em>Divide, then round to the nearest cent.</em>
$6.452 ≈ $6.45 in tip money
c.
This is probably the simplest part of the 3. Just add $30.24 + $2.12 + $6.45.
$30.24 + $2.12 + $6.45
$32.36 + $6.45
You pay a total of $38.81 for lunch.
