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25 Jul 2018, 21:49
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D
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% (01:43) correct
18%
(01:52)
wrong
based on 98
sessions
History
Date
Time
Result
Not Attempted Yet
If 100 cars drive down 3rd Avenue ever y hour, three times as many cars use 2nd Avenue as use 3rd Avenue, and 1/4 of the cars on both avenues are taxis, how many taxis drive down 2nd Avenue ever y hour?
A. 25
B. 50
C. 60
D. 75
E. 200
A. 25
B. 50
C. 60
D. 75
E. 200
25 Jul 2018, 22:13
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100 cars drive down 3rd Avenue ever y hour
three times as many cars use 2nd Avenue as use 3rd Avenue
=> number of cars on 2nd avenue = 3 * 100 = 300
1/4 of the cars on both avenues are taxis
=> number of taxis that drive down 2nd Avenue ever y hour = \(\frac{1}{4} * 300\) = 75
Hence option D
three times as many cars use 2nd Avenue as use 3rd Avenue
=> number of cars on 2nd avenue = 3 * 100 = 300
1/4 of the cars on both avenues are taxis
=> number of taxis that drive down 2nd Avenue ever y hour = \(\frac{1}{4} * 300\) = 75
Hence option D
25 Jul 2018, 23:27
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Solution
Given:
- • 100 cars drive down 3rd Avenue every y hour.
• Three times as many cars use 2nd Avenue as 3rd Avenue.
• 1/4 of the cars on both avenues are taxis
To find:
- • The number of taxis driving down 2nd Avenue every y hour.
Approach and Working:
- • Since three times as many cars use 2nd Avenue as 3rd Avenue, the number of cars using 2nd avenue= 300
- o Hence, the number of taxis using 2nd avenue= \(300*\frac{1}{4}= 75\).
Hence, the correct answer is option D.
Answer: D
