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Wednesday, November 9, 2011

Ivan Salvadors Math Question








Andrew drove his car 234 km from Dawson to mayo in Yukon territory in 3 h. Brain 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, to the nearest minute.










Key things to KNOW!
60 Minutes in 1 Hour
180 Minutes in 3 hours


Show my thinking:








I made a mistake, Instead of 180-161=11. It's supposed to be 180-169. Sorry.



234/3 = 78
78+5=83
234/83= 2.819
2..819*60= 169
3*60=180
180-169=11


Brian beat Andrew in 11 Minutes.


4 comments:

  1. Great post Ivan. Your post really included a lot of detail and steps. Also its a good thing to talk about the key informations.

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  2. Good job Ivan! You seemed to have the same question as me .. Interesting. Well I got the same answer as you and found my answer this way as well, so I don't see anything wrong..

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  3. Good post Ivan! It's good that you showed your work and explained it well. Good job!

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  4. Good job Ivan! It's great how you explained your work with a lot of details. I really like how you corrected your mistake instead of just ignoring it.

    ReplyDelete