Yesterday, we had a choice between three contests. We could pick the grade 9, the grade 10, or the grade 11. We chose the grade 10. I worked with my partners Trevor,Jeff, and Martin. Tim C left us for Donna. Most of the questions were quite easy. With our friends, we could easily figure out the easiest of problems. I have learned that to do these contests, you have to have a clear mind and you have to never give up.
The question that i found the most interesting was number 16. In this question, we have to find out how much it cost for Gerry to download 360 songs.
"In 2004, Gerry downloaded 200 songs. In 2005, Gerry downloaded 360 songs at a cost per song which was 2 cents less than in 2004. Gerry's total cost each year was the same. The cost of downloading 360 songs in 2005 was.."
To do this question, i made an equation.
My equation was
200X = 360(x-32)
-160X = -11520
X=72
Now i plug in the equation.
360 times (72-32) = 144 dollars
The answer is 144.
This Contest was very fun! I especially liked the fact that we were able to work with each other. It made me want to work hard and find out the answer! Doing math contests is like playing a video game. It is much more fun when you have friends with you!
Subscribe to:
Post Comments (Atom)
No comments:
Post a Comment