Question

4 points
A car covers 30 km in 30 minutes and the next 30 km in 40 minutes. Calculate the average speed
for the entre journey
a 514 km/h
b) 52.4 km/h
C) 254 km
d; 21.4​

Answer 1

Step-by-step explanation:

The total time for the journey is given as,

t = d1 /v1 + d2/v2

= 30/40 + 30/20

=2.25hour

The average speed is given as,

Vavg = d1 + d2 / t

= 30+30 / 2.25

=26.67km/h

Thus, the average speed of the car is 26.67km/h.

Answer 2

21.4 is the right answer