Question

Sachin can cover a distance in 1hr 24 min by covering 2/3 of the distance at 4 kmph and the rest at 5 kmph. The total distance is?

Answer 1

Answer:

6 KM

Step-by-step explanation:

Let total distance =D

Distance travelled at 4 kmph speed =(23)D

Distance travelled at 5 kmph speed =(1−23)D=(13)D

Total time =1 hr 24 min = (60+24) min =8460 hr =2115 hr  

Note: For explanation on 1 hr 24 min  =2115 hr, check comment by Deepak.

We know,

Time=DistanceSpeed

Total time

2115=2/34D+1/35D

2115=2D12+D15

84=14D

THUS DISTANCE (D) = 6KM