Question

An old man walk 1 km 20 meter in 20 minutes. Find his speed in km/h

Answer 1

Answer:

Step-by-step explanation:

Distance= 1 km 20 m.= 1020 metres

Time= 20 mins.

Speed= Distance/Time= 1020/20=51 m/min

m/min to km/hr= 3.06 km/hr

Answer 2

The speed of car is 0.06 km/hr

Step-by-step explanation:

Distance traveled by old man = 1 km 20 m

1000 m = 1 km

1 m = 0.001 km

20 m =$0.001 \times 20 = 0.02 km$

60 minutes = 1 hour

20 minutes = $\frac{20}{60} hr$

$Speed = \frac{Distance}{Time}$

$Speed = \frac{0.02}{\frac{20}{60}}=0.06 km/hr$

Hence The speed of car is 0.06 km/hr

#Learn more :

A man runs 2.5 km in 10 min find his speed in km/h

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