Question

Maria ran in a 42 km marathon she covered the first half of the marathon from 0600 to 0715 hours and stopped and rest. She resumed running was able to cover the remaining distance from 0720 to 0935 hours. What was Maria's average speed for the entire marathon

Answer 1

time for first part = 1.25 hrs
time for 2nd part = 2.25 hrs

total time = 3.5 hrs
total distance = 42 km

avg speed = 42/3.5 km/h or 12 km/h
if we consider only her "running time"

but ....

her total time in the marathon was 9:35 - 6:00 or
3: 35 which is 3.583333... hrs
so her actual avg speed = 42/3.583333 = 11.72 km/h

I would consider the second answer to be the correct one.

Answer 2

I DON'T LIKE TO GO TO HIGH SCHOOL. TOO MUCH PRESSURE

Answer 3

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Answer 4

I can't understand!

Answer 5

So easy