The formula d = rt gives the distance traveled in time t at rate r. johnny drives for 1.5 hours and travels 93 miles. what was johnny's average speed?
As you are solving for r, first solve your equation for r. Do this by dividing both sides by t to get r=d/t. Now, plug in your values, r=(93)/(1.5)=62 mph. This means your average speed is 62 mph.
Average speed = Distance/Time
So...
? = 93/1.5
93/1.5 equals...
62
So, 62 = 93/1.5
Average Speed = 62