Question

please help me in the 5th question of the excersise

Answer 1

Answer:

a)$142 km$

b)$40.5 km/hr$

Step-by-step explanation:

Make sure all the units are the same,

1)$120 min=120/60=2 hours$

2)$90 min=90/60=1.5 hours$

a) We need to find the distance travelled

Distance=Speed * Time

⇒Distance travelled $=35*2+48*1.5=142 km$

b)Average speed=Total Distance travelled/ Total time taken

So,

Average speed=$\frac{142}{2+1.5}=40.5 km/hr$