Question

a scooter is travelling at 36 kilometre per hour for 5 hours and at 45 km per hour for 4 hours find the average speed for the whole journey​

Answer 1

Answer:

40 km/h is the average speed of scooter

Step-by-step explanation:

avg. speed = total distance/total time

so, first we will find distance in both case:-

Distance of 1st case:

s = 36 km/h

t = 5h

d = s × t

d = 36 × 5

d = 180 km

Distance of 2nd case:

s = 45 km/h

t = 4h

d = s × t

d = 45 × 4

d = 180 km

Finally we have distance so let's find avg speed:-

avg speed = total d / total t

= ( 180 + 180 ) / ( 5 + 4)

= 360 / 9

= 40 km/h

Answer 2

Answer:

$\huge\underline\bold\red{♡AnsWer♡}$

• speed=distance/time1) 36=s/5s=36×5s=180km3)45=s/4s=45×4s=180average speed= total distance/