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julsineya [31]
3 years ago
12

What is the unit rate for 7 phone calls in 2 hours

Mathematics
2 answers:
Dvinal [7]3 years ago
7 0
To find unit rate, find the number of calls per 1 hr.

7 calls/2 hrs= 3.5

Final answer: 3.5 calls per hour
Tresset [83]3 years ago
6 0
3.5 phone calls an hour

understandable






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Let the cost of 1 notebook be x and the cost of 1 binder be y.

4 notebooks and 3 binders would cost 23.5

Therefore, 4x + 3y = 23.5     (1)

7 notebooks and 6 binders would cost 44.5

Therefore, 7x + 6y = 44.5     (2)

Multiply the first equation by 2.

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y = 4.5

Hence, cost of 5 notebooks and 3 binders is:

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Hence, cost of 5 notebooks and 3 binders is $26.

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