A car drives 2/3 of the distance of a trip at a speed of 60 mph, and 1/3 of the distance of a trip at a
speed of 50 mph. Find the average speed of the car throughout the trip. Give the answer in mph.
Distance = x
x / [x/60 * 2/3 + x/50 * 1/3 ] 'cancel out' the x's and simplify/reduce a bit
1/(1/90 + 1/150) = 56.25 m/hr average
I was confused on this but you might be right!