P left for the city A from city B at 5:20 AM , he travels at a speed of 80 km/h for 4 hours 15 minutes ,after that the speed was reduce

Question

P left for the city A from city B at 5:20 AM , he travels at a speed of 80
km/h for 4 hours 15 minutes ,after that the speed was reduced to 60
km/h, if the distance between two cities is 350 km that at what time
did the rich city P.
• 9:25 AM
• 9:45 AM
• 9:20 AM
• 9:35 AM​

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Maria 3 weeks 2021-10-04T16:47:25+00:00 1 Answer 0 views 0

Answers ( )

    0
    2021-10-04T16:49:10+00:00

    Step-by-step explanation:

    total distance = 350

    at the speed 80 km/h in 4 hours 15 minutes he covered = 80 × (4+15/60) km

    = 320+20 km = 340 km

    distance to be cover = 350 – 340 km = 10 km

    speed = 60 km/h

    required time = 10/60 h = 10/60 × 60 min

    = 10 min

    so, p reach the city B at (5:20 AM+4 h 15 min + 10 min) = 9:45 AM

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