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sergeinik [125]
3 years ago
7

How can multiplication be used to check your division equation answer?

Mathematics
1 answer:
Zolol [24]3 years ago
4 0
Multiplication and division are opposites and can be used to undo each other. 
For example, 
4/2=2
But if you take the quotient and multiply it by the divisor
2x2=4
you get the original dividend
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$397.34 (if he sold the 20 leftover hot dogs), $297.34 if he didn't.

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We are going to assume that a month has 30 days.

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  • We need to subtract the amount of money he spent in each hot dog (12 dollars in raw material plus one dollar for packing): 13 dollars x 100 hot dogs he prepared = 1300 dollars

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1600 - 1300 - 2.66 + 100 = 397.34

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