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Amani purchased a prepaid phone card for $15. Long distance calls cost 19 cents a minute using this card. Amani used her card only once to make a long distance call. If the remaining credit on her card is $12.34, how many minutes did her call last? Minutes

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musiclover10045

Subtract the balance from the original amount:

15 - 12.34 = 2.66

Now divide the amount spent by price per minute:

2.66 / 0.19 = 14

The call lasted 14 minutes.

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