A car runs 400 km in 2 hours. how far will it travel in 5 hours
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Step-by-step explanation:
Let the distance travelled at 100 km/hr be x km.
Then, distance travelled at 50 km/hr is (170 - x) km.
Given,
100
x
+
50
(170−x)
=2
⇒
100
x+2(170−x)
=2⇒x+240−2x=200
⇒x=140km.
∴ Distance travelled at 50 km/hr =(170−140)km=30km