Carly needs $149 to buy a skateboard. She already has $52. She earns money washing cars for $20 a car.
Carly says that if she washes 5 cars she will have enough money to buy the skateboard.
Use the drop-down menus to explain how to solve this problem.
First multiply
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× $20 to find how much money Carly will earn washing cars. Then add this amount to
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to find how much money Carly has in all. Finally,
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the total to
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see if it is enough to buy the skateboard. If not, repeat the process until Carly has enough money.
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