SOLUTION: Brent and Lance leave a park on bikes at constant rates in opposite directions. After 2.5 hours they are 85 miles apart. If Lance bikes 2mph faster than Brent, how fast is Lance

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Question 1069529: Brent and Lance leave a park on bikes at constant rates in opposite directions. After 2.5 hours they are 85 miles apart. If Lance bikes 2mph faster than Brent, how fast is Lance biking?
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
L=B%2B2
B%2At%2BL%2At=D
.
.
.
B%2A2.5%2BL%2A2.5=85
2.5%28B%2BL%29=85
Substituting,
2.5%28B%2BB%2B2%29=85
2B%2B2=34
2B=32
B=16mph
So,
L=16%2B2
L=18mph