Ruth spent 12 minutes on the phone while routing 4 phone calls. In all, how many phone calls does Ruth have to route to spend a total of 18 minutes on the phone? Solve using unit rates.

6 calls

pls mark brainliest if possible

Step-by-step explanation:

12 min/4 phone calls

unit rate: 3 min per phone call

c=#of calls

3c = 18

c=6

6 calls

answ9x x 3=

step-by-step explanation:

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