With a uniform speed a car covers the distance in 8 hours. Had the speed been increased by 4 km/hr, the same distance could have been covered in 7 1/2 hours. What is the distance covered?
Answers: A) 287 km B) 480 km C) 127 km D) 177 km E) 2698 km
Let the distance be x km. Then,   x/(7 1/2) - x/8 = 4   2x/15 - x/8 = 4 =&gt; x   = 480 km   Answer: 480 km
<result>B</result>
With a uniform speed a car covers the distance in 8 hours. Had the speed been increased by 4 km/hr, the same distance could have been covered in 7 1/2 hours. What is the distance covered?