Question

Hi . I need help with this question. Please show workings.​

Answer 1

6km/h

Explanation:

`speed \: = (distance)/(time) \\ 50m \: = 0.5km \\ 30s \: = 0.0833333 \: hours`

`speed \: = (0.5)/(0.0833333) \\ speed \: = 6.0`

Answer 2

6 km/h

Explanation:

Solution,

Distance travelled = 50 m

Time taken = 30 second

Let's find the speed in meter/ second

Speed =
`(distance \: travelled \: )/(time \: taken)`

plug the values

`= (50)/(30)`

`= (5)/(3 \: ) \: meter \: per \: second`

Now,Let's find the speed in km/ hour

`(5)/(3) * (3600)/(1000)`

Reduce the numbers with G.C.F 3

`5 * (1200)/(1000)`

Reduce the numbers with GCF 5

`(1200)/(200)`

Reduce the fraction with 200

`6 \: kilometer \: per \: hour`

Hope this helps..

Best regards!