SOLUTION: Maya and Rena bought a 60 minute phone card to call their mom in Ghana. Maya used three times as many minutes as Rena. How many minutes did each girl use?

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Question 912132: Maya and Rena bought a 60 minute phone card to call their mom in Ghana. Maya used three times as many minutes as Rena. How many minutes did each girl use?
Answer by JulietG(1812) About Me  (Show Source):
You can put this solution on YOUR website!
M + R = 60
M = 3R
... (3R) + R = 60
4R = 60
R = 15
Rena used 15 minutes. Therefore Maya used 45 minutes (3 times as many)
15+45=60