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If 20 percent of x is 5y, and y = 7, what is 60 percent of x
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18 Dec 2016, 15:22
18 Dec 2016, 15:22
Expert Reply
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Question Stats:
94% (00:53) correct
5% (01:19) wrong based on 128 sessions
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If 20 percent of x is 5y, and y = 7, what is 60 percent of x?
A. 105
B. 115
C. 125
D. 145
E. 175
A. 105
B. 115
C. 125
D. 145
E. 175
Drill 1
Question: 8
Page: 311
Question: 8
Page: 311
Re: If 20 percent of x is 5y, and y = 7, what is 60 percent of x
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18 Dec 2016, 15:33
18 Dec 2016, 15:33
1
Expert Reply
Explanation
Begin by Plugging In 7 for y, so 20 percent of x is 35. You could go on to solve for x, but a shortcut would be to say that 60 percent of x is three times 20 percent of x, so multiply 35 by 3 to get 105.
Hence option A is correct.
Begin by Plugging In 7 for y, so 20 percent of x is 35. You could go on to solve for x, but a shortcut would be to say that 60 percent of x is three times 20 percent of x, so multiply 35 by 3 to get 105.
Hence option A is correct.
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Re: If 20 percent of x is 5y, and y = 7, what is 60 percent of x
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28 Dec 2016, 16:55
28 Dec 2016, 16:55
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sandy wrote:
If 20 percent of x is 5y, and y = 7, what is 60 percent of x?
A. 105
B. 115
C. 125
D. 145
E. 175
A. 105
B. 115
C. 125
D. 145
E. 175
If 20% of x = 5y, then...
40% of x = 10y
and 60% of x = 15y
Since y = 7, then 15y = (15)(7) = 105
Answer: A
