Ankur finishes a journey by car in 6 hours . He travels the first half of the journey at a speed of 30 km/h and the second half of it at a speed of 60 km/h . The total distance covered is :
Answer & explanation
Correct answer: option 1
( 1st half ) ( 2nd half )
ratio of Speed 30 : 60
Speed 1 : 2
Distance = Speed × Time
Speed is inversely proportional to Time
( 1st half ) ( 2nd half )
Time 2 : 1
( 1 + 2 )R = 3R → 6 hours
1R → 2 hours
Distance at the speed of 30 km/h = 30 × 4 = 120 km
Total Distance = 120 × 2 = 240 km