Question

sam spent 6 minutes on the phone while routing 2 phone calls. In all, how many phone calls does sam have to route to spend a total of 15 minutes on the phone? Assume the relationship is directly proportional.

Answer 1

Answer:

  5 calls

Step-by-step explanation:

You want to know the number of calls that will take 15 minutes to route if it takes 6 minutes to route 2 calls.

Proportion

The number of calls and the number of minutes is proportional. For Sam to spend 15/6 = 2.5 times as long routing calls, sam will need to route 2.5 · 2 = 5 phone calls.

Sam has to route 5 calls to spend 15 minutes on the phone.

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Additional comment

You can write the proportion as ...

  calls/time = 2 calls/(6 minutes) = N calls/(15 minutes)

  N = (15/6)(2 calls) = 5 calls

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