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January 29, 2015

January 29, 2015

Posted by **Charu** on Tuesday, May 1, 2012 at 10:21am.

- Math -
**Steve**, Tuesday, May 1, 2012 at 10:51amtime = distance/speed

he took 3 minutes (3/60 hr) longer to walk than to run, so

d/5 = 3/60 + d/10

d/10 = 3/60

d = 1/2

check:

it takes 6 min to run 1/2 km at 5km/hr

it takes 3 min to run 1/2 km at 10km/hr

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