Question 976015
Hi there,
Set up two formulae:
For Keisha 1st Plan:
$40 + n(0.16) [n = no. of miles driven.]
For Keisha's 2nd Plan:
$49 + n(0.11)
Make them equal one another:
$40 + n(0.16) = 49 + n(0.11)
Collect like terms:
n(0.16) - n(0.11) = 49 - 40
n(0.05) = 9
n = 9/0.05
n = 180
Therefore 180 has to be driven
before the plans cost the same.
The cost is $68.80
Hope this helps:-)