At a constant speed of 72 kilometers per hour, a vehicle travels

Question

At a constant speed of 72 kilometers per hour, a vehicle travels how many kilometers per second?

A) 0.02
B) 0.2
C) 0.6
D) 1.2
E) 6.0

mbafinhopeful · Answer

72 kilometers in 60 mins, there are 60*60 = 3600 secs in 60 mins, so distance travelled in one second = 72/3600 = 2/100 = 0.02. (A).

chetan2u · Answer

The number is in km per hour but answer asked is in km per second...
So 72 km per hour =  \frac{72}{60*60}=\frac{72}{36*100}=\frac{2}{100}=0.02 
A

akadiyan · Answer

72 kilometers per hour translates to 72 kilometers in 3600 seconds.

Distance traveled per second = 72/3600 = 0.02

Ans: A

Hatakekakashi · Answer

72 kmph

in km/sec

convert hours into seconds
1 hr = 3600 seconds

72/3600

2/100

0.02

PrernaMurada · Answer

72 kilometers in 60 mins, there are 60*60 = 3600 secs in 60 mins, so distance travelled in one second = 72/3600 = 2/100 = 0.02.
So answer is A

EMPOWERgmatRichC · Answer

Hi All,

We're told that a vehicles travels at a constant speed of 72 kilometers per HOUR. We're asked what that speed is in kilometers per SECOND. This question is really just about 'unit conversions', although at a certain point you can use the 'spread' of the answer choices to your advantage and stop doing 'math.'

1 hour = 60 minutes 
1 minute = 60 seconds 
1 hour = (60)(60) = 3600 seconds

72 km/3600 seconds

Since 72/720 = .1, we know that 72/3600 is far LOWER than .1 
There's only one answer that matches...

Final Answer:  A

GMAT assassins aren't born, they're made, 
Rich

ScottTargetTestPrep · Answer

Since 1 hour = 3600 seconds, 72 km/hour = 72/3600 = 1/50 = 0.02 km/second.

Answer: A

dcummins · Answer

72km / 1 hour * 1 hour / 3600 sec
=72/3600
= (36*2)/36*100
= 2/100 
=0.02

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At a constant speed of 72 kilometers per hour, a vehicle travels

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At a constant speed of 72 kilometers per hour, a vehicle travels

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