math
posted by Sitara .
Jen spends half his money on lunch and then spends $1.50 for a magazine. He uses one third of what he has left to pay for the bus ride home, then gives his little brother a quarter.If Jen has three nickles and two quarters left, how much money did he have before lunch?

If m is the starting amount (in cents), then we have
after buying the magazine, he has m  150
1/3 of that is 1/3(m150)
m  150  1/3(m150)  25 = 65
m  150  m/3 + 50  25 = 65
2m/3 125 = 65
2m/3 = 190
m = 285
So, he started with $2.85
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