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If a man travels at 40 km/h, he reaches his destination late by 12 minutes but if he travels at 60 km/h then he reaches 12 minutes earlier. The distance travelled by him is:
- A30 km
- B35 km
- C42 km
- D48 km
Answer not set
Discussion 1
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CCommunity
Distance = Speed × Time
Let the distance be x km
Let the initial time taken be t hrs
If speed is 40 km/hr x = 40 × (t + 12/60)
If speed is 60 km/hr x = 60 × (t – 12/60)
60t – (60 × 12/60) = 40t + (40 × 12/60)
t = 1 hr
Distance = 40 × (1 + 1/5) = 48 km
Let the distance be x km
Let the initial time taken be t hrs
If speed is 40 km/hr x = 40 × (t + 12/60)
If speed is 60 km/hr x = 60 × (t – 12/60)
60t – (60 × 12/60) = 40t + (40 × 12/60)
t = 1 hr
Distance = 40 × (1 + 1/5) = 48 km