Asked by Krystal
Uniform motion Related Problem
Five boy scouts biked to Caliraya lake at 5 km/h. their scout master gave them a ride back home in his pickup car, at 20 kph. Find the hiking time if it 6 hors longer than their riding time.
Five boy scouts biked to Caliraya lake at 5 km/h. their scout master gave them a ride back home in his pickup car, at 20 kph. Find the hiking time if it 6 hors longer than their riding time.
Answers
Answered by
Reiny
hiking vs biking, is there a typo ?
let the distance be d
hiking time = d/5
car time = d/20
d/5 - d/20 = 6
times 20
4d - d = 120
3d = 120
d = 40
hiking time = 40/5 = 8 hrs
check:
hiking time = 40/5 = 8
car time = 40/20 = 2
which is a difference of 6 hours, answer is correct
let the distance be d
hiking time = d/5
car time = d/20
d/5 - d/20 = 6
times 20
4d - d = 120
3d = 120
d = 40
hiking time = 40/5 = 8 hrs
check:
hiking time = 40/5 = 8
car time = 40/20 = 2
which is a difference of 6 hours, answer is correct
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