A car starts at a speed of 30 km/h and increases its speed by 5 km/h after every hour. Another car has a constant speed of 40 km/h. In how much time will both the cars cover an equal distance?
Show answer & explanation
Correct answer: C
Explanation
The correct answer is option 3 i.e. 5 hours
Calculations:
The first car with the speed of 30 kmph covers the following distance
= 30 + 35 + 40 + 45 + 50 = 200 km in 5 hours
Hence, the second car with a constant speed of 40 kmph covers the same distance of 200 km in 5 hours.
Hence, the required time = 5 hours