Recent GMAT Questions from the GMATprep CD.
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M= her monthly income
12M=her yearly income
x=fraction that she saves each month
1-x=fraction that she does not save each month
So, total amount that she saves is x*12M. This is equal to three times the amount that she DOESN'T save each month, which can be written as 3*(1-x)*M.
Setting them equal:
x*12M=3*(1-x)M
divide out the M from both sides
12x=3-3x
15x=3
[spoiler]x=1/5[/spoiler]
12M=her yearly income
x=fraction that she saves each month
1-x=fraction that she does not save each month
So, total amount that she saves is x*12M. This is equal to three times the amount that she DOESN'T save each month, which can be written as 3*(1-x)*M.
Setting them equal:
x*12M=3*(1-x)M
divide out the M from both sides
12x=3-3x
15x=3
[spoiler]x=1/5[/spoiler]













