Answers

2015-08-19T21:37:28+05:30
I know what u have done. You have actually multiplied speed with 30 minutes while the speed is in km/hr. see the calculation
s=d/t
=51/3
=17
2nd time=30 min=30/60hr
=1/2h
d=s*t
=17*1/2
=8.5kms
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