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John bought z hamburgers at $3 each and paid with a 20 dollar note. How much change did he get?

John bought z hamburgers at $3 each and paid with a 20 dollar note. How much change did he get?
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John bought z hamburgers at $3 each and paid with a 20 dollar note. How much change did he get?

User DavidVdd
by
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2 Answers

3 votes
20/3 = z
Now z would equal 6.666... but he can't eat a sixth of a burger and only only pay for that part. He would have to eat 5 (not 7) because he cannot afford 6 burgers with a $20 bill
User Jayesh Babu
by
8.6k points
3 votes
He got 20 - 3z change.
User Avalanchy
by
7.5k points
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