SOLUTION: Karen purchased a prepaid phone card for $15. long distance calls cost 14 cents per minute using this card. Karen used her card only once to make a long distance call. Ifthe remain

Question 341472: Karen purchased a prepaid phone card for $15. long distance calls cost 14 cents per minute using this card. Karen used her card only once to make a long distance call. Ifthe remaing credt on her card is $12.34, how many minutes did her last call last?
Found 2 solutions by edjones, josmiceli:
Answer by edjones(8007) (Show Source): You can put this solution on YOUR website!
Let x be time that the call lasted.
15-.14x=12.34
-.14x=-2.66
x=2.66/.14
x=19 min.
.
Ed
Answer by josmiceli(19441) (Show Source): You can put this solution on YOUR website!
Let = minutes for her last call.
She used up of the $15

min
RELATED QUESTIONS
Ann purchased a prepaid phone card for $15. Long distance calls 23 cost cents a minute... (answered by josgarithmetic)
Rachel purchased a prepaid phone card for $15. Long-distance calls cost 6 cents a minute... (answered by Solver92311,math_helper)
Lena purchased a prepaid phone card for $30. Long distance calls cost 17 cents a minute... (answered by Earlsdon)
Lena purchased a prepaid phone card for $30. Long distance calls cost 17 cents a minute... (answered by Alan3354)
Latoya purchased a prepaid phone card for $30. Long distance calls cost 16 cents a minute (answered by jonvaliente)
Yoko purchased a prepaid phone card for $30. Long distance calls cost 9 cents a minute... (answered by rfer,unlockmath)
Nicole purchased a prepaid phone card for $20 . Long distance calls cost 0.13 cents a... (answered by solver91311)
Kaitlin purchased a prepaid phone card for . Long distance calls cost cents a minute... (answered by brynt2012)
Latoya purchased a prepaid phone card for $30. Long distance calls cost 9 cents a minute (answered by PLBROWN)