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A Car traveling at a constant speed took 1 minute 48 seconds to travel
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Updated on: 31 Oct 2018, 07:07
Updated on: 31 Oct 2018, 07:07
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A Car traveling at a constant speed took 1 minute 48 seconds to travel the distance between a certain road sign and the beginning of a roadwork area.
If the distance between the road sign and the beginning of the road work area was 2,400 meters, then the car was traveling at what speed, in kilometers per hour?
(1kilometer = 1,000 meters)
A. 50
B. 60
C. 80
D. 90
E. 100
If the distance between the road sign and the beginning of the road work area was 2,400 meters, then the car was traveling at what speed, in kilometers per hour?
(1kilometer = 1,000 meters)
A. 50
B. 60
C. 80
D. 90
E. 100
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Re: A Car traveling at a constant speed took 1 minute 48 seconds to travel
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27 Oct 2014, 21:50
27 Oct 2014, 21:50
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alexa wrote:
A Car traveling at a constant speed took 1 minute 48 seconds to travel the distance between a certain road sign and the beginning of a roadwork area.
If the distance between the road sign and the beginning of the road work area was 2,400 meters, then the car was traveling at what speed, in kilometers per hour?
(1kilometer = 1,000 meters)
OA: 80
If the distance between the road sign and the beginning of the road work area was 2,400 meters, then the car was traveling at what speed, in kilometers per hour?
(1kilometer = 1,000 meters)
OA: 80
Answer required in Km/Hr
Distance = 2400 Meters = \(\frac{2400}{1000}\) Kms = 2.4 Kilometers
Time = 1 Minute 48 Seconds = 60+48 = 108 seconds = \(\frac{108}{60}\) Minutes = \(\frac{108}{60*60}\) Hours
Speed \(= \frac{2.4}{\frac{108}{60*60}} = 0.8 * 10 * 10 = 80\)
Answer = 80
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Re: A Car traveling at a constant speed took 1 minute 48 seconds to travel
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11 Aug 2017, 22:09
11 Aug 2017, 22:09
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alexa wrote:
A Car traveling at a constant speed took 1 minute 48 seconds to travel the distance between a certain road sign and the beginning of a roadwork area.
If the distance between the road sign and the beginning of the road work area was 2,400 meters, then the car was traveling at what speed, in kilometers per hour?
(1kilometer = 1,000 meters)
If the distance between the road sign and the beginning of the road work area was 2,400 meters, then the car was traveling at what speed, in kilometers per hour?
(1kilometer = 1,000 meters)
OA: 80
\(Speed = \frac{Distance}{Time}\)
We need to find Speed in \(km/hr\), hence convert the units of distance and time in \(kms\) and \(hrs\) respectively.
Given; Distance \(= 2400\) meters \(= 2.4\) kms
Time \(= 1\) minute \(48\) seconds \(= 60 + 48 = 108\) seconds \(= \frac{108}{3600}\) hrs \(= \frac{3}{100}\) hrs
Speed \(= \frac{2.4}{(3/100)} = \frac{2.4*100}{3}\)
Speed \(= \frac{240}{3} = 80\) km/hr
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