aig math
posted by lidia .
Rosa and Marty had the same amount of money.After Rosa spent $45 and Marty spent $117, Rosa had 4 times as much money as Marty. How much money did Rosa have at first?
I don't know the answer to this one so can you show me how you got your answer and what's your answer?

original amount of Rosa and Marty  x
after spending:
Rosa  x45
Marty  x117
now Rosa has 4 times as much as Marty
x45 = 4(x117)
x45 = 4x  468
3x = 423
x =141
They both had 141
check: after spending:
Rosa had 14145 = 96
marty had 141117 = 24
Does Rosa have 4 times as much as Marty ??? YES!!
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