A car runs at the speed of 40 km per hour when not serviced and runs at 80 kmph when serviced. After servicing the car covers a certain distance in 8 hours. How much time will the car take to cover the same distance when not serviced? Select the correct option.
A) 8 hours 12 minutes
B) 12 hours
C) 16 hours
D) 17 hours
E) None
Explanation :   Time = 80*8 / 40= 
<gadget id="calculator">80*8 / 40</gadget>
<output>16</output>
16 hours   Answer â€“ 16 hours
<result>C</result>
A car runs at the speed of 40 km per hour when not serviced and runs at 80 kmph when serviced. After servicing the car covers a certain distance in 8 hours. How much time will the car take to cover the same distance when not serviced?