Question

Vikas can cover a distance in 1 hr 24 min by covering 2/3 of the distance at 4 kmph and the rest
at 5 kmph the total distance is?
(A) 18 km
(B) 6 km
(C) 12 km
(D) 17 km​

Answer 1

Let the total distance is x km

Total time=1 hr 24 min= 21/15 min

vikas covers 2/3 of the distance at 4 km/hr

s= 14×15/21×60

=6km

Answer 2

Answer:

⇒ (B) 6 km

Step-by-step Explanation:

Let the total distance is x km.

Total time = 1 h 24 min = 21/15 min

Vikas covers 2/3 of the distance at 4 km/hr then time to cover this distance = 2/3s/4

Remaining distance = s −2/3s = 1/3s

Vikas covers rest of the distance at 5 km/hr then time to cover rest distance = 5 /3s /1

∴ 21/15 = 2/12s + 1/15s

⇒ 21/15 = 14/60s

⇒ s = 14*15/21*60

⇒ 6 km

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