SOLUTION: Vicky earns 30$ for washing 6 cars. If Vicky charges the same rate how many cats must she wash to earn 35$

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Question 1069546: Vicky earns 30$ for washing 6 cars. If Vicky charges the same rate how many cats must she wash to earn 35$
Answer by josmiceli(19441) About Me  (Show Source):
You can put this solution on YOUR website!
Her rate of earning money is:
+30%2F6+=+5+ dollars / car
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The formula you need is:
[ dollars earned ] = [ number of cars ] * [ dollars / car ]
Let number of cars = +n+
+35+=+n%2A5+
+n+=+7+
She must wash 7 cars to earn $35