Question

A man travels 4 kms. 500 metres in 1/2 hour
find his speed per hour?​

Answer 1

SOLUTION

GIVEN

A man travels 4 km 500 metres in 1/2 hour

TO DETERMINE

The speed of the man per hour

EVALUATION

Here it is given that the man travels 4 km 500 metres in 1/2 hour

Here 1 km = 1000 meter

Here 4 km 500 metre = 4.5 km

Hence the required speed of the man per hour

$\displaystyle \sf{ = \frac{Total \: distance \: travelled\: }{Total \: time \: taken } }$

$\displaystyle \sf{ = \frac{4.5}{ \frac{1}{2} } } \: \: km/h$

$\displaystyle \sf{ = 4.5 \times 2 } \: \: km/h$

$\displaystyle \sf{ = 9} \: \: km/h$

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Answer 2

Answer:

9 km/ hr

Step-by-step explanation:

Here it is given that the man travels 4 km 500 metres in 1/2 hour

Here 1 km = 1000 meter

Here 4 km 500 metre = 4.5 km

Hence the required speed of the man per hour

\displaystyle \sf{ = \frac{Total \: distance \: travelled\: }{Total \: time \: taken } }=TotaltimetakenTotaldistancetravelled

\displaystyle \sf{ = \frac{4.5}{ \frac{1}{2} } } \: \: km/h=214.5km/h

\displaystyle \sf{ = 4.5 \times 2 } \: \: km/h=4.5×2km/h

\displaystyle \sf{ = 9} \: \: km/h=9km/h