Question

Amy's home is 1.8 km from the shop. One evening she went to the shop and was in there for 10 minutes. Calculate the average speed in km/h on her way to the shop.

Answer 1

The average speed on her way is 10.8 km/h

Explanation:

Speed:

The ratio of distance to the time that takes to cover that distance is call speed of the object.

`Speed=(Distance)/(Time)`

Amy's home is 1.8 km from the shop.

She takes 10 minutes to went the shop.

Distance = 1.8 km

Time = 10 minutes
`=(10)/(60)` h
`=\frac16 \ h`.

The average speed on her way is

`=(Distance)/(Time)`

`=\frac{1.8\ km}{\frac{1}6 \ h}`

`=(1.8* 6\ km)/( \ h)`

=10.8 km/h

Answer 2

10.8 km per hour.

Explanation:

Given:

Amy's home is 1.8 km from the shop.

One evening she went to the shop and was in there for 10 minutes.

Question asked:

Calculate the average speed in km/h on her way to the shop.

Solution:

Distance = 1.8 km

Time = 10 minutes

Convert it into hours

60 minutes = 1 hour

1 minute =
`(1)/(60)`

10 minutes =
`(1)/(60)*10=(10)/(60)= (1)/(6) \ hours`

As we know:

`Speed=(Distance)/(Time)`

`=(1.8)/((1)/(6) ) \\ \\ =1.8/(1)/(6) \\ \\ =1.8*6\\ \\ =10.8\ km\ per\ hour`

Thus, the average speed on her way to the shop was 10.8 km per hour.