A car travels a certain distance taking 7 hrs in forward journey. During the…
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A car travels a certain distance taking 7 hrs in forward journey. During the return journey, the speed is increased by 12km/hr and the car takes 5 hrs to reach the destination. What is the distance travelled in one way?
Answer: A. 210 kms — Solution: 1 For Forward Journey : Speed = S kmph Time = 7 Hrs Distance = D kms Distance = (Speed ) × (Time) D = 7S ................... (i) For Return Journey…
- A.
210 kms
- B.
30 kms
- C.
20 kms
- D.
60 kms
Attempted by 36 students.
Show answer & explanation
Correct answer: A
Solution: 1
For Forward Journey :
Speed = S kmph
Time = 7 Hrs
Distance = D kms
Distance = (Speed ) × (Time)
D = 7S ................... (i)
For Return Journey
Speed = ( S + 12 ) kmph
Time = 5 hrs
Distance = D kms
Distance = (Speed ) × (Time)
D = (S+12) × 5 ................... (ii)
Distance travelled is same,
So, 7S = 5S + 60
S = 30 kmph
Distance = 30 × 7 = 210 kms
Hence Option (A)