Jamal and his friends are conducting a car wash to raise money for a school play. Over the first weekend they raised $336.00, which was 80% of what they set out to earn. If they collect $21 for each car they wash, how many more cars must they wash?
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So first thing, you would divide 336 by 0.80 which gives you 420

Thats how much they set out to earn.

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