A truck takes 80 seconds to travel the first 80m and another 10 seconds to travel a further 70m. What is the average speed?

I think it is 214.28

90 seconds for 150 m

150/90 = 1.67 m/s

now you could do km.hr from that
1.667 m/s * 3600 s/h * 1 km/1000m
= 6 km/hour

an - What ? !

how? why?

"an" seems to be replying to lots of things for which she has no expertise. She needs to cut it out!

To find the average speed, we need to divide the total distance traveled by the total time taken.

The truck traveled 80m in 80 seconds, and then an additional 70m in 10 seconds.

So, the total distance is 80m + 70m = 150m, and the total time taken is 80s + 10s = 90s.

Now, we can calculate the average speed:

Average Speed = Total Distance / Total Time
= 150m / 90s
≈ 1.67 m/s

Therefore, the average speed of the truck is approximately 1.67 meters per second.