Question

amman travels certain distance by train in 4 hours and 12 minutes at a speed of 4.8 kilometre per hour how much time will it take to cover the same distance if the speed of train is increased to 5 8.8 km per hour with proportion method

Answer 1

Answer:

CASE - 1

Time = 4 hr 12 min = 240 + 12 = 252 min

speed = 4.8 km / hr = 4.8 /60 km / min

distance covered = (252 * 4.8 ) / 60 = 4.2 *4.8 km

CASE -2

new speed = 58.8 + 4.8 = 63.6 km / hr

therefore new time = distance / new speed

= (4.2 *4.8 ) / 63.6

= .3169 hr = 19 min (approx)

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Step-by-step explanation: