exam Maths Puzzle Numerical Ability

If I increase my usual driving speed by 10 km/h, I can drive the 255 km trip to Nashville in 24 min less than usual. How fast do I usually drive?

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exam Other Question

Find equation of each line in form of Y=MX+b

The line thru 3,2 and orgin How do you write the point-slope form of an equation for a line that passes through each point with the given slope?