by constance
(tallahassee)
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 21.59
25 - 21.59 = 3.41
Let y be the amount of minutes
0.11 × y = 3.41
Divide both sides by 0.11
0.11y / 0.11 = 3.41 / 0.11
y = 31
Her call lasted 31 minutes.
Aug 09, 16 01:40 PM
Average age of Dipu and Apu is 22 years. Average age of Dipu and Tipu is 24 years. Age of Dipu is 21 years. What are the ages of Apu, and tipu ? Let
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