Question

Lena purchased a prepaid phone card for $20. Long distance calls cost 21 cents a minute using this card, Lena used her card only once to make a long distance
call. If the remaining credit on her card is $12.23, how many minutes did her call last?

Answer 1

Answer:

37 minutes

Step-by-step explanation:

Lena has 20 dollars. 20 - 12.23 = 7.77

Lena has $7.77 dollars left.

We divide this by .21 to see how many minutes her call was.

7.77 ÷ .21 = 37

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