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> | <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> | ||
− | == See Also =={{AMC10 box|year=2011|ab=A| | + | |
+ | == See Also == | ||
+ | {{AMC10 box|year=2011|ab=A|before=First Question|num-a=2}} |
Revision as of 10:58, 8 May 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.
See Also
2011 AMC 10A (Problems • Answer Key • Resources) | ||
Preceded by First Question |
Followed by Problem 2 | |
1 • 2 • 3 • 4 • 5 • 6 • 7 • 8 • 9 • 10 • 11 • 12 • 13 • 14 • 15 • 16 • 17 • 18 • 19 • 20 • 21 • 22 • 23 • 24 • 25 | ||
All AMC 10 Problems and Solutions |