2007 AMC 8 Problems/Problem 5
Problem
Chandler wants to buy a mountain bike. For his birthday, his grandparents
send him
, his aunt sends him
and his cousin gives him
. He earns
per week for his paper route. He will use all of his birthday money and all
of the money he earns from his paper route. In how many weeks will he be able
to buy the mountain bike?
Solution
Let be the number of weeks.
Thus, we have the equation .
Simplify,
The answer is