Difference between revisions of "2011 AMC 10A Problems/Problem 1"
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== Solution == | == Solution == | ||
+ | <math>30.5-30 = .5</math> hours which is <math>30</math> minutes. <math>30*10=300</math> cents which is <math>3</math> dollars. <math>100*.05=5</math> dollars. So finally <math>20+3+5=28</math> dollars. <math>\longrightarrow \boxed{\textbf{D}}</math> |
Revision as of 18:20, 10 February 2011
Problem 1
A cell phone plan costs each month, plus
¢ per text message sent, plus
¢ for each minute used over
hours. In January Michelle sent
text messages and talked for
hours. How much did she have to pay?
Solution
hours which is
minutes.
cents which is
dollars.
dollars. So finally
dollars.