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Which is greater -3/4+2/3 or -3/4*2/3
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10 Jul 2019, 14:25
10 Jul 2019, 14:25
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Question Stats:
71% (00:42) correct
28% (00:30) wrong based on 108 sessions
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Quantity A |
Quantity B |
\(- \frac{3}{4} + \frac{2}{3}\) |
\(- \frac{3}{4} \times \frac{2}{3}\) |
A)The quantity in Column A is greater.
B)The quantity in Column B is greater.
C)The two quantities are equal.
D)The relationship cannot be determined from the information given.
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Re: Which is greater -3/4+2/3 or -3/4*2/3
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10 Jul 2019, 15:19
10 Jul 2019, 15:19
1
Carcass wrote:
Quantity A |
Quantity B |
\(- \frac{3}{4} + \frac{2}{3}\) |
\(- \frac{3}{4} \times \frac{2}{3}\) |
A)The quantity in Column A is greater.
B)The quantity in Column B is greater.
C)The two quantities are equal.
D)The relationship cannot be determined from the information given.
Quantity A: \(-\frac{3}{4} + \frac{2}{3}=\frac{-3}{4} + \frac{2}{3}\)
\(=\frac{-9}{12} + \frac{8}{12}\)
\(=\frac{(-9) + 8}{12}\)
\(=\frac{-1}{12}\)
Quantity B: \(- \frac{3}{4} \times \frac{2}{3}= \frac{-3}{4} \times \frac{2}{3}\)
\(=\frac{-6}{12}\)
Since \(\frac{-6}{12}<\frac{-1}{12}\), the answer is A
Cheers,
Brent
Which is greater -3/4+2/3 or -3/4*2/3
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26 Feb 2024, 21:48
26 Feb 2024, 21:48
1
Another way of doing this is to convert them to percentages.
Quantity A
\(\frac{-3}{4} + \frac{2}{3}\)
-75% + 66% (approx) (exact value = 66.6666%)
-9% (approx) (exact value = 8.33333%)
Quantity B
\(\frac{-3}{4} \times \frac{2}{3}\)
-75% x 2/3
Since 75% consists of three 25%s, 2/3 of 75% would be 50%
-75% x 2/3 = -50%
Quantity A = -9%
Quantity B = -50%
Quantity A is greatest.
Quantity A
\(\frac{-3}{4} + \frac{2}{3}\)
-75% + 66% (approx) (exact value = 66.6666%)
-9% (approx) (exact value = 8.33333%)
Quantity B
\(\frac{-3}{4} \times \frac{2}{3}\)
-75% x 2/3
Since 75% consists of three 25%s, 2/3 of 75% would be 50%
-75% x 2/3 = -50%
Quantity A = -9%
Quantity B = -50%
Quantity A is greatest.
