Question

Help :)

Answer 1

15 * $2.389 = $35.84 ....>self-serve pump
15 * $2.459 = $36.89 ....>full-service pump

$36.89 - $35.84 = $1.05

Answer: She'll save $1.05 by pumping her own gas

Answer 2

15*2.389 = $35.835
15*2.459 = $36.885

36.885-35.835 = $1.05