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If the value of the expression above is to be halved by dou
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03 Jun 2017, 08:09
03 Jun 2017, 08:09
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Question Stats:
85% (00:50) correct
14% (01:03) wrong based on 106 sessions
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\(\frac{a + \frac{b}{c}}{\frac{d}{e}}\)
If the value of the expression above is to be halved by doubling exactly one of the five numbers a, b, c, d, or e, which should be doubled?
A) a
B) b
C) c
D) d
E) e
Re: If the value of the expression above is to be halved by dou
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27 Sep 2017, 08:45
27 Sep 2017, 08:45
1
What we want to get is \(\frac{\frac{a + \frac{b}{c}}{\frac{d}{e}}}{2}\). This has to be achieved by doubling one of the variables. This means that we have to double a variable so that the 2 becomes the denominator of our expression. The only way to obtain it is to double D, so that, since it is a fraction at the denominator, it is as we were multiplying for the reciprocal of the fraction. Then, answer B!
Re: If the value of the expression above is to be halved by dou
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28 Sep 2017, 17:30
28 Sep 2017, 17:30
can you explain in detail please?
