SOLUTION: abu ran for 1/3 of an hour and then walked for half an hour at the rate of 3km/h. in all, he had covered 4 km. how fast did he run?
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Question 253133: abu ran for 1/3 of an hour and then walked for half an hour at the rate of 3km/h. in all, he had covered 4 km. how fast did he run?
Answer by josmiceli(19441) (Show Source): You can put this solution on YOUR website!
Write 2 equations,1 for running
and 1 for walking
and
given:
hr
hr
km/hr
km
-----------------
and
and, since
He ran 7.5 km/hr
check:
OK
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