Friday, October 17, 2008

ME12 Aim: Additional Coin Problems

HW: Complete Side 2 of worksheet

Lesson Review:

Nathalie has five times as many nickels than dimes. If she has a total of $3.15, how many nickels does she have?

Let x represent the number of dimes and 5x represent the number of nickels.
Let $3.15 = 315 cents
Then the total value : 10x + 25(5x) = 315
which simplifies to : 10x + 125x = 315
which simplifies to: 135x = 315
which simplifies to: x = 3

Solutions: 3 dimes and 5(3) = 15 nickels


Practice Exercises:
http://www.youtube.com/watch?v=M4-xobpf3EM

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