I'm assuming that the question states that xy is what percent of y?
5x=2y
x=(2y)/5
Multiplying numerator and denominator by 20
x=40y/100
Hence, x is 40% of y. Hence D
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Source: Beat The GMAT — Problem Solving |
Assuming the question reads "x is what percent of y"
or you could plug in numbers for x and y to make things more clear.
if x = 6 then y = 15
X is what percent of y can be directly translated to x = ?/100*y
Fill in the numbers 6 = ?/100 * 15
Do the algebra: 600/15 = ? therefore it is 40%.
or you could plug in numbers for x and y to make things more clear.
if x = 6 then y = 15
X is what percent of y can be directly translated to x = ?/100*y
Fill in the numbers 6 = ?/100 * 15
Do the algebra: 600/15 = ? therefore it is 40%.
Becky
Master GMAT Instructor
The Princeton Review
Irvine, CA
Master GMAT Instructor
The Princeton Review
Irvine, CA
