Question

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.

Answer 1

16 minutes

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:

`M = k * P`

Where k represents the constant:

`8 = k * 2`

Divide through by 2

`4 = k`

`k = 4`

Solving for M, when P = 4

Substitute 4 for P and 4 for k in
`M = k * P`

`M = 4 * 4`

`M = 16`

Hence:

She spent 16 minutes in total