Question

10. Duck Mountain Provincial Park is on the boundary of Saskatchewan

Answer 1

Average speed is 18.6 kilometer per hour

Solution:

Given that,

To visit the sites, Nathan's family drove 6.8 km, 9.8 km,  20.3 km, and 46.8 km

They drove for 4.5 hour

To find: average speed

The average speed is given by formula:

$\text{ Average speed } = \frac{\text{ total distance }}{\text{ total time taken }}$

Here, total distance = 6.8 + 9.8 + 20.3 + 46.8 = 83.7 km

Total time taken = 4.5 hour

Substituting the values in formula,

$\text{ Average speed } = \frac{83.7}{4.5} = 18.6$

Thus average speed is 18.6 kilometer per hour