SOLUTION: If im doing a marathon for charity and every mile i run i earn 16$ every mile i bike i earn 12$. At the end of the marathon i ran and biked a total of 24 miles and earned 318$. How

Question 955181: If im doing a marathon for charity and every mile i run i earn 16$ every mile i bike i earn 12$. At the end of the marathon i ran and biked a total of 24 miles and earned 318$. How many miles did i run and how many miles did i bike?

Answer by josmiceli(19441) (Show Source): You can put this solution on YOUR website!
Ler = number of miles you run
Let = number of miles you bike
-----------------
(1)
(2)
------------------------
Multiply both sides of (1) by
and subtract (1) from (2)
(2)
(1)
-----------------------

and, since
(1)
(1)
(1)
-----------------
7.5 = number of miles you run
16.5 = number of miles you bike
------------
check:
(2)
(2)
(2)
(2)
OK
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