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08 Mar 2017, 10:17
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E
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
15%
(low)
Question Stats:
82% (01:05) correct
18%
(01:14)
wrong
based on 112
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Renee rides her bicycle 20 miles in m minutes. If she can ride x miles in 10 minutes, which of the following equals x?
A. m/200
B. m/20
C. m/2
D. 2m
E. 200/m
A. m/200
B. m/20
C. m/2
D. 2m
E. 200/m
08 Mar 2017, 15:44
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SajjadAhmad
Renee rides her bicycle 20 miles in m minutes. If she can ride x miles in 10 minutes, which of the following equals x?
A. m/200
B. m/20
C. m/2
D. 2m
E. 200/m
Dear SajjadAhmad, A. m/200
B. m/20
C. m/2
D. 2m
E. 200/m
I'm happy to respond.
This is a very basic proportion problem. See: GMAT Quant: Rates and Ratios
\(\frac{distance}{time} = \frac{20 miles}{(m) min} = \frac{(x) miles}{10 min}\)
Units are the same on both sides, so cancel the units.
\(\frac{20}{m} = \frac{x}{10}\)
We want to solve for x, so multiply both sides by 10.
\(\frac{200}{m} = x\)
OA = (E)
Does all this make sense?
Mike
09 Mar 2017, 05:26
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speed = 20/m
distance covered in 10 minutes = x = (20/m) x 10 = 200/m
Option E
distance covered in 10 minutes = x = (20/m) x 10 = 200/m
Option E
