Difference between revisions of "2019 AMC 8 Problems/Problem 8"
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| − | After Gilda gives 20% of the marbles to Pedro, she has 80% of the marbles left. If she then gives 10% OF WHATS LEFT to Ebony, she has (0.8*0.9) 72% of what she had at the beginning. Finally, she gives 25% of what's left to her brother, so she has (0.75*0.72){\textbf{(E)}\ 54 | + | After Gilda gives 20% of the marbles to Pedro, she has 80% of the marbles left. If she then gives 10% OF WHATS LEFT to Ebony, she has (0.8*0.9) 72% of what she had at the beginning. Finally, she gives 25% of what's left to her brother, so she has (0.75*0.72) <math>\boxed{\textbf{(E)}\ 54}</math>. of what she had in the beginning left.~heeeeeeeheeeeee |
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==See Also== | ==See Also== | ||
Revision as of 12:46, 20 November 2019
Problem 8
Gilda has a bag of marbles. She gives 
of them to her friend Pedro. Then Gilda gives 
of what is left to another friend, Ebony. Finally, Gilda gives 
of what is now left in the bag to her brother Jimmy. What percentage of her original bag of marbles does Gilda have left for herself?
Solution 1
After Gilda gives 20% of the marbles to Pedro, she has 80% of the marbles left. If she then gives 10% OF WHATS LEFT to Ebony, she has (0.8*0.9) 72% of what she had at the beginning. Finally, she gives 25% of what's left to her brother, so she has (0.75*0.72) 
. of what she had in the beginning left.~heeeeeeeheeeeee
ar
See Also
| 2019 AMC 8 (Problems • Answer Key • Resources) | ||
| Preceded by Problem 7 |
Followed by Problem 8 | |
| 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. 
