SOLUTION: Karen sells children’s hats for $4 and adults’ hats for $7. On Saturday, she sold 120 hats, and she collected $720. How many adults’ hats did she sell?

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Question 1127057: Karen sells children’s hats for $4 and adults’ hats for $7. On Saturday, she sold 120 hats, and she collected $720. How many adults’ hats did she sell?
Answer by greenestamps(13203) About Me  (Show Source):
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120 children's hats at $4 each would have cost $480. The actual total sales was $720, which is $240 more than that.

Each adult's hat costs $3 more than each children's hat. The number of adult's hats needed to be sold to make up that other $240 is 240/3 = 80.

ANSWER: She sold 80 adult's hats and 120-80 = 40 children's hats.