|
|
| Line 1: |
Line 1: |
| − | == Problem 1 ==
| + | #redirect [[2011 AMC 12A Problems/Problem 1]] |
| − | A cell phone plan costs <math>\mathdollar 20</math> each month, plus <math>5</math>¢ per text message sent, plus <math>10</math>¢ for each minute used over <math>30</math> hours. In January Michelle sent <math>100</math> text messages and talked for <math>30.5</math> hours. How much did she have to pay?
| |
| − | | |
| − | <math> \textbf{(A)}\;\mathdollar 24.00 \qquad\textbf{(B)}\;\mathdollar 24.50 \qquad\textbf{(C)}\;\mathdollar 25.50\qquad\textbf{(D)}\;\mathdollar 28.00\qquad\textbf{(E)}\;\mathdollar 30.00 </math>
| |
| − | | |
| − | == 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>
| |
| − | | |
| − | == See Also ==
| |
| − | {{AMC10 box|year=2011|ab=A|before=First Question|num-a=2}}
| |
| − | {{MAA Notice}}
| |
