allisonthetwin769 allisonthetwin769

17-10-2019
Mathematics

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Mrs. Baca uses a phone card to call her relatives in Columbia. It costs her 45 cents to talk for 15 minutes. How long can she talk for 75 cents? (HINT: find the unit rate first.) *

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Аноним Аноним

17-10-2019

Answer:

25 minutes.

Step-by-step explanation:

Unit rate = 45/15 = 3 cents / minute.

So she pays 3 cents for 1 minute

and for 75 cents she can talk for 75 * 1/3 = 25 minutes.

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