Difference between revisions of "2005 AMC 10A Problems/Problem 1"
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==Problem== | ==Problem== | ||
| − | While eating out, Mike and Joe each tipped their server <math>2</math> dollars. Mike tipped <math>10%</math> of his bill and Joe tipped <math>20%</math> of his bill. What was the difference, in dollars between their bills? | + | While eating out, Mike and Joe each tipped their server <math>2</math> dollars. Mike tipped <math>10\%</math> of his bill and Joe tipped <math>20\%</math> of his bill. What was the difference, in dollars between their bills? |
<math> \mathrm{(A) \ } 2\qquad \mathrm{(B) \ } 4\qquad \mathrm{(C) \ } 5\qquad \mathrm{(D) \ } 10\qquad \mathrm{(E) \ } 20 </math> | <math> \mathrm{(A) \ } 2\qquad \mathrm{(B) \ } 4\qquad \mathrm{(C) \ } 5\qquad \mathrm{(D) \ } 10\qquad \mathrm{(E) \ } 20 </math> | ||
Revision as of 19:55, 5 February 2010
Problem
While eating out, Mike and Joe each tipped their server 
dollars. Mike tipped 
of his bill and Joe tipped 
of his bill. What was the difference, in dollars between their bills?
Solution
Let 
be Mike's bill and 
be Joe's bill.
So the desired difference is 
