21) Andrew drove his car 234 km from Dawson to Mayo in Yukon Territory in 3 h. Brian drove his truck along the same route at an average speed of 5 km/h greater than Andrew's average speed. How much less time did Brian take, round to the nearest minute?
So, what I did was figure out Brian's Trip.
If Brian was traveling 5 km/h faster then Andrew that would mean Brian would be able to travel 249 km in 3h. You would get 249 km in 3 hours because all you have to do is multiply 5 by 3 because he is going 5 km/h and it takes 3 hours to get from Dawson to Mayo. That's how I got 249 km in 3 h.
After that I made a chart.
Then I rounded 10.8 to 11.
It took Brian 11 less minutes to reach Mayo from Dawson.
Please tell me if I made any mistakes or if there is an easier way to do this.
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