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Last Saturday a cyclist started a 40 km trip at 9 o'clock
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10 Jul 2024, 01:12
10 Jul 2024, 01:12
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Question Stats:
88% (02:42) correct
11% (00:50) wrong based on 9 sessions
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Last Saturday a cyclist started a 40 km trip at 9 o'clock in the morning and rode at an average speed of 20 km/hr for 45 minutes. The cyclist stopped to rest for x mins and then rode at an average speed of 30 km/hr until the trip was completed at 11 o'clock in the morning. What is the value of x?
A. 35
B. 25
C. 20
D. 15
E. 10
A. 35
B. 25
C. 20
D. 15
E. 10
Show: :: OA
B
Re: Last Saturday a cyclist started a 40 km trip at 9 o'clock
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10 Jul 2024, 02:11
10 Jul 2024, 02:11
Expert Reply
1)
First period: 45min
First distance: 20*4/60=15km
Remaining distance: 40-15=25
2)
Rest xmin
3)
Second period 25/30*60=50min
Total 120min
So \(x=120-45-50=25\)
First period: 45min
First distance: 20*4/60=15km
Remaining distance: 40-15=25
2)
Rest xmin
3)
Second period 25/30*60=50min
Total 120min
So \(x=120-45-50=25\)
Re: Last Saturday a cyclist started a 40 km trip at 9 o'clock
[#permalink]
10 Jul 2024, 02:13
10 Jul 2024, 02:13
Expert Reply
Ps
Here you have stellar questions. Over 15k only quant in every specific area of the gRE tested with stellar explanations by tutors.
Why the necessity to go to another website?
What is the source of these questions ? Are they official ?
I hope not
Here you have stellar questions. Over 15k only quant in every specific area of the gRE tested with stellar explanations by tutors.
Why the necessity to go to another website?
What is the source of these questions ? Are they official ?
I hope not
