## Tuesday, November 2, 2010

### Brayden's Scribepost

Today in class we were assigned a question to do from our textbook. My question was number 21 from page 61.

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.

In the chart my goal was to find how many minutes 15 km was. The chart shows how I got there.

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.

Remember to play TUTPUP!