Adele spent 8 minutes on the phone while routing 2 phone calls. If she routes 4 phone calls, how much time will Adele have spent
on the phone in total? Solve using unit rates.
1 answer:
Answer:
16 minutes
Step-by-step explanation:
Given
Represent minutes with M and Phone calls with P.
When M = 8; P = 2
Required
Determine M when P = 4
First, we need to determine the constant of proportion using:

Where k represents the constant:

Divide through by 2


Solving for M, when P = 4
Substitute 4 for P and 4 for k in 


Hence:
She spent 16 minutes in total
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Step-by-step explanation:
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If the two fractions have a common denominator, then yes, you do. Only add the numerators. :)