Difference between revisions of "2008 AMC 8 Problems/Problem 9"
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| − | After the | + | After the 15% loss, Tammy has 100*0.85 = 85 dollars. After the 20% gain, she has 85*1.2=102 dollars. This is an increase in 2 dollars from her original 100 dollars, a d:2 |
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==See Also== | ==See Also== | ||
{{AMC8 box|year=2008|num-b=8|num-a=10}} | {{AMC8 box|year=2008|num-b=8|num-a=10}} | ||
{{MAA Notice}} | {{MAA Notice}} | ||
Revision as of 17:05, 8 August 2021
Problem
In 
Tycoon Tammy invested 
dollars for two years. During the first year
her investment suffered a 
loss, but during the second year the remaining
investment showed a 
gain. Over the two-year period, what was the change
in Tammy's investment?
Solution
After the 15% loss, Tammy has 100*0.85 = 85 dollars. After the 20% gain, she has 85*1.2=102 dollars. This is an increase in 2 dollars from her original 100 dollars, a d:2
See Also
| 2008 AMC 8 (Problems • Answer Key • Resources) | ||
| Preceded by Problem 8 |
Followed by Problem 10 | |
| 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. 
