Elsa purchased a phone card for $25. Long distance cost .11 a minute using this card. Elsa used her card only once to make a long distance call. If the remaining credit on her card is $21.59, how many minutes did her call last. Solution Elsa spent 25 minus 21.5925 - 21.59 = 3.41Let y be the amount of minutes0.11 × y = 3.41Divide both sides by 0.110.11y / 0.11 = 3.41 / 0.11y = 31Her call lasted 31 minutes.
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