book Maths Puzzle Numerical Ability

A car travels from A-B @ 60km/h and returns from B-A @ 80km/h. What is 1) Avg distance travelled 2) Avg velocity.
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I need help factoring the following problem

s^2 - 10s + 24

thanks an algebra teacher stated that 2x+1=1 5=2x=14 are equivalent. what was done to the first equation to get the second equation? what is the value of x that makes both equations equal?