Use the equation below to calculate the average speed for each problem, then complete the data table below. Problem Distance Tim
e Speed Distance/Time 1. Ron walks 22.5 km in 5 hours, find his speed. 22.5 km 5 hours 22.5km/ 5hr= 4.5 km/hour 2. A train covers 168 km in 4 hours. Find its speed. 3. Rachel travelled 240 km in 4 hours by train and then travelled 120 km in 3 hours by car and 3 km in 1/2 hour by cycle. What is the average speed during the whole journey? 4. A car moves from A to B at a speed of 50 km/hr and comes back from B to A at a speed of 30 km/hr. Find its average speed during the journey.
1 answer:
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Answer:
The rates are equal.
Step-by-step explanation:
To compare these rates, convert them to a unit rate. Divide both the numerator and denominator by the denominator. If you were to express 126 points every 3 games as a fraction:
Now, divide both the top and the bottom by 3:
That is a unit rate of 42 points per game.
Next, do the same thing for the other rate:
This is also a unit rate of 42 points per game, so the rates are equal.