Difference between revisions of "1990 AJHSME Problems/Problem 13"
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==Solution== | ==Solution== | ||
| − | After the first ounce, there are <math>3.5</math> ounces left. | + | After the first ounce, there are <math>3.5</math> ounces left. Since each additional ounce or fraction of an ounce adds <math>22</math> cents to the total cost, we need to add <math>4\times 22</math> to the cost for the first ounce. |
| − | + | So, the total price is <math>30+4\times 22=118</math> cents. The answer is choice <math>\boxed{\textbf{(C)}~\mathbf{1.18}~\textbf{dollars}}</math>. | |
==See Also== | ==See Also== | ||
Latest revision as of 17:01, 8 August 2018
Problem
One proposal for new postage rates for a letter was 
cents for the first ounce and 
cents for each additional ounce (or fraction of an ounce). The postage for a letter weighing 
ounces was
Solution
After the first ounce, there are 
ounces left. Since each additional ounce or fraction of an ounce adds cents to the total cost, we need to add 
to the cost for the first ounce.
So, the total price is 
cents. The answer is choice 
.
See Also
| 1990 AJHSME (Problems • Answer Key • Resources) | ||
| Preceded by Problem 12 |
Followed by Problem 14 | |
| 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 AJHSME/AMC 8 Problems and Solutions | ||
The problems on this page are copyrighted by the Mathematical Association of America's American Mathematics Competitions. 
