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If y ≠ 0, what percent of y percent of 50 is 40 percent of y
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14 Jul 2018, 05:03
14 Jul 2018, 05:03
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82% (00:58) correct
17% (00:44) wrong based on 29 sessions
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Re: If y ≠ 0, what percent of y percent of 50 is 40 percent of y
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14 Jul 2018, 05:17
14 Jul 2018, 05:17
1
Expert Reply
Explanation
The question already contains a variable (y). Use another variable to represent the desired value. Represent “what” with the variable x, and isolate x to solve. Notice that by the end, the y variables cancel out:
\(\frac{x}{100} \times \frac{y}{100} \times 50=\frac{40}{100}y\).
At this point, there are many options for simplifying, but do simplify before multiplying anything. Here is one way to simplify:
\(\frac{x}{100} \times \frac{y}{2} \times 50=\frac{2}{5}y\).
\(x=80.\)
The question already contains a variable (y). Use another variable to represent the desired value. Represent “what” with the variable x, and isolate x to solve. Notice that by the end, the y variables cancel out:
\(\frac{x}{100} \times \frac{y}{100} \times 50=\frac{40}{100}y\).
At this point, there are many options for simplifying, but do simplify before multiplying anything. Here is one way to simplify:
\(\frac{x}{100} \times \frac{y}{2} \times 50=\frac{2}{5}y\).
\(x=80.\)
Re: If y ≠ 0, what percent of y percent of 50 is 40 percent of y
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07 Oct 2021, 13:24
07 Oct 2021, 13:24
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Thanks to another GRE Prep Club member, I have just discovered this valuable topic, yet it had no discussion for over a year. I am now bumping it up - doing my job. I think you may find it valuable (esp those replies with Kudos).
Want to see all other topics I dig out? Follow me (click follow button on profile). You will receive a summary of all topics I bump in your profile area as well as via email.
