A car travelling 5/7th of its actual speed covers 42 km in 1 hr 40 min 48 sec. what is the actual speed of the car? Pick:
A) 22  B) 35  C) 27  D) 10  E) 18
Explanation:   Let the Actual Speed = x   It is travelling with 5/7 of its actual speed = 5x/7.   Converting the time into seconds = 3600 + 2400 + 48 seconds.   Covers a distance with speed = 42/(3600 + 2400 + 48)   = 424048424048 × 3600 = 25 kph   Given 5x75x7 = 25 kph   So Actual Speed = 25 × (7/5) = 35 kph   Answer:35
<result>B</result>
A car travelling 5/7th of its actual speed covers 42 km in 1 hr 40 min 48 sec. what is the actual speed of the car?