The ratio of buses to cars on River Road is 2 to 23. If there are 630 fewer buses than cars on River Road, how many cars are on River Road?
A) 30
B) 60
C) 660
D) 690
E) 750
OA D
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The ratio of buses to cars on River Road is 2 to 23. If there are 630 fewer buses than cars on River Road, how many cars
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BTGmoderatorDC
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Solution:BTGmoderatorDC wrote: ↑Sat Aug 08, 2020 5:11 pmThe ratio of buses to cars on River Road is 2 to 23. If there are 630 fewer buses than cars on River Road, how many cars are on River Road?
A) 30
B) 60
C) 660
D) 690
E) 750
OA D
We can let the ratio of buses to cars = 2x : 23x, thus:
23x - 630 = 2x
21x = 630
x = 30
It follows that there are 23 x 30 = 690 cars on the road
Answer: D
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How many cars are on River Road?BTGmoderatorDC wrote: ↑Sat Aug 08, 2020 5:11 pmThe ratio of buses to cars on River Road is 2 to 23. If there are 630 fewer buses than cars on River Road, how many cars are on River Road?
A) 30
B) 60
C) 660
D) 690
E) 750
Since buses : cars = 2:23, the correct answer must be a MULTIPLE OF 23.
Only D (690) is a multiple of 23.
The correct answer is D.
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Followed here and elsewhere by over 1900 test-takers.
I have worked with students based in the US, Australia, Taiwan, China, Tajikistan, Kuwait, Saudi Arabia -- a long list of countries.
My students have been admitted to HBS, CBS, Tuck, Yale, Stern, Fuqua -- a long list of top programs.
As a tutor, I don't simply teach you how I would approach problems.
I unlock the best way for YOU to solve problems.
For more information, please email me (Mitch Hunt) at [email protected].
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