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
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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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