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Singapore 5A help!!!


Caitilin
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Can someone help me understand how to solve this problem? I don't understand how to solve it the SM way, and I can't come up with the answer key's answer doing it algebraically. Help, please? :D Thanks!

 

Here is the problem:

 

Larry spent 1/2 of his money on a camera, and another 1/8 on a radio. The camera cost $120 more than the radio. How much money did he have at first?

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I found it helps to think equivalent fractions and draw the bar diagrams for it.

 

1/2 is 4/8.. so the camera is 4 out of 8 bars.

 

camera ___ ____ ___ ___

radio ___

other money is ___ ___ ___

 

the camera is 120 more than radio. That means 120 dollars is divided over those 3 more bars.

each bar is 40

there are 8 bars total.

40*8=320

sound right?

 

-crystal

Edited by cbollin
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  • 1 year later...

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