GMAT Quantitative Reasoning Practice Test 3

Question : 15 of 100

Marks: +1, -0

Two cars are driving towards one another. The first car is traveling at a speed of 120 km/h, which is 28% faster than the second car. If the distance between the cars is 855 km, how long will it takes the cars to meet (in hours)?

$2.5$
$3$
$3.5$
$4$
$4.5$

Validate

Solution:

The speed of the second car is

X

X+0.28 X=120, X=93.75 {\km} {/}{\h}

In order to find the time it will take the cars to meet, you should divide the total distance by the sum of the car's speeds:

855 {/}(120+93.75)=4

. Therefore, the answer is four hours.

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