Asked by Jenny

if margaret ran 8 km/h uphill for 45 minutes on her way came down at 24 km/h what was her average speed?

Answers

Answered by Damon
distance = 8 * .75 = 6 km

time down = 6/24 = 1/4 hour

total time = 3/4 + 1/4 = 1 hour

total distance = 12 km
so
average speed = 12 km/hour
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