Respuesta :
A. $9 or $10
B. $18 or $20
$57.80 ≈ $60
$60 x 0.15 = $9
$122.46 ≈ $120
$120 x 0.15 = $18
B. $18 or $20
$57.80 ≈ $60
$60 x 0.15 = $9
$122.46 ≈ $120
$120 x 0.15 = $18
Answer:
a. $57.80
$66.47
b. $122.46
$140.829
Step-by-step explanation: