Question

A car moved with a speed of 60km/h for 2 hours and then with a speed of 80km/h for the next 1 hour.calculate the total distance covered by the car
Answer:60/2=30km/h
80/1=?

Answer 1

wrong. distance = speed * time, not speed/time

(and you can't figure 80/1 = 80?)

If you had watched your units, you'd have seen that

(60km/hr) / (2hr) = 30 km/hr^2
when you wanted km

Answer 2

I don't know the answer

Answer 3

well of course you don't. That's why I told you that

distance = speed * time

So, for each part of the trip, multiply the speed by the time.

Then add those two numbers.