A truck covers a distance of 288 km at a certain speed in 8 hours. How much time would a car take at an average speed which is 18 kmph more than that of the speed of the truck to cover a distance which is 90 km more than that travelled by the truck ?	Choose the correct choice from the following options:	A) 6 hours	B) 5 hours	C) 7 hours	D) 8 hours	E) None
Explanation :   Speed of the truck = Distance/time = 288/8= 
<gadget id="calculator">288/8</gadget>
<output>36</output>
36 kmph   Now, speed of car= (speed of truck + 18) kmph = (36 + 18)= 
<gadget id="calculator">(36 + 18)</gadget>
<output>54</output>
54 kmph   Distance travelled by car= 288 + 90= 
<gadget id="calculator">288 + 90</gadget>
<output>378</output>
378 km   Time taken by car= Distance/Speed = 378/54= 
<gadget id="calculator">378/54</gadget>
<output>7</output>
7 hours.   Answer –7 hours
<result>C</result>
A truck covers a distance of 288 km at a certain speed in 8 hours. How much time would a car take at an average speed which is 18 kmph more than that of the speed of the truck to cover a distance which is 90 km more than that travelled by the truck ?