Power ABC   If the values of a, b, and c in the above expression are each decreased by 40 percent, by approximately what percentage will the value of the entire expression decrease?
February 27, 2006
Past Problems
	E-mail Solutions to: pow@umassd.edu
	Correct Solutions
	Thomas Robertson.  Riverside, RI Greg LaCroix. Somerdale, NJ GK. Bridgewater, NJ Hendrik Salomons. Arapoti, Brazil Marius Damian. Braila, Romania Daniel Senécal. Montréal, Qc, Canada Wenlin Fan, Mountain Top, PA Michel Poulin, Collège Jean-Eudes, Montréal, Québec, Canada Adrian Atanasiu. Bucharest, Romania Doug McKenzie. Crane Country Day, Santa Barbara, CA Jerome Cherry. Mundare, Alberta, Canada Christopher Bremner, Crane Country Day School, Santa Barbara, CA Gary Brensike Aristides Kyriakakis.  Thessaloniki. Greece Tim Poe, Austin TX Radu Ionescu. Montreal, Quebec, Canada. Allamanis Miltiadis. Anatolia High School, Thessaloniki, Greece Siraj Iqbal. Miami Killian Senior High, Miami, FL Phillip Ai.  Hammarksjold Middle School, East Brunswick, NJ Tom Lindsay. Carver, MA Joume Bautik, Chadral Prep, Elbonia Zach Roomberg, Beck Middle School, Cherry Hill, NJ Emil Lalov. Mathematical High School, Pleven, Bulgaria Eugene Roytman.  New York, NY Becky Britton. St. Luke Middle School, Columbus, GA Mike Osterfoss. Moore, SC Bob Mitchell.  Normal, Illinois Craig Sidell.  New York, NY Albert Zhou. Scott Middle School, Lincoln, NE Amy Clemens. Forsyth Country Day School Coman Daniel. Romania Braila High School. N.Iorga Nick Taylor. US Air Force Academy, Colorado Springs, CO Farid Lian. Uniatlantico, Barranquilla-Colombia Felicia Ratnaraj.  WEbster Groves High School, MO City, St. Louis Meera. Bridgewater, NJ Christian Allen. South Pasadena Middle School, South Pasadena, CA John Song. White Station High School, Memphis, TN Caroline Moore. Forsyth Country Day School, Winston-Salem, NC Anthony Dykstra. Powell Middle School, SpringHill, FL Sarah Chen. Marie Curie Middle School, New York, NY Verónica.  Argentina David Lu. P.S.139Q, NYC Jerold Greenberg. New York, NY Will Lewis.  Creekwood Middle School, Kingwood, Texas Minray Yang. Carwise Middle School, Palm Harbor, FL David Shi.  JLS Middle School, Palo Alto, CA Kunal Singh.  Kendriya Vidyalaya Happy Valley Shillong, India QSi Tran.  Crane School, Santa Barbara, CA Anthony San Pedro. South Pasadena Middle School, South Pasadena, CA Buddy Baker.  Reynolds High School, Winston-Salem, NC Zelko Zahtila, Melbourne, Australia Matthew DeCoste. La Canada Middle School, La Canada, CA Daniel Acosta-Kane. Miami Killian Senior High School, Miami, FL Fabian Moa. NIIT College, Kuching, Sarawak, Malaysia Michelle Lam. South Pasadena Middle School, South Pasadena, CA Ekaterina Merkurjev. Palisades Charter High School, Pacific Palisades, CA Kevin Temew. Davao Christian High School, Davao City, Philippines Hamilton Hardison.  University of Georgia.  Athens, GA Seth Flowers. Parkersburg High School, Parkersburg, WV Bar Greengrass. Israel Christopher Thomas Jeff Haddock, Wilcox Tech, Meriden, CT Marlène Boisvert. Collège Jean-Eudes, Montréal, QC, Canada Tom McCain. Bolton, UK James Kawakami, South Pasadena Middle School Mark Spanier. Sauk Centre HS, Sauk Centre, MN Timothy Yales. Westland, MI Chris Hanes. Ocala, FL Ms. Rothermel. Rye Junior High School, Rye, NH Amanda Tu. Southridge School, BC, Canada Guillaume Roy-Loranger, Collège Jean-Eudes, Montreal, Quebec, Canada Kevin Herickhoff. Sauk Centre HS, Sauk Centre, MN Josh Gow. Sauk Centre HS, Sauk Centre, MN Rebecca Greenberg. Beck Middle School Karen Wong. CHIJ St. Nicholas Girls' School, Singapore XuYingchun. CHIJ St. Nicholas Girls' School, Singapore Max G. Carusi Middle School, NJ George Hatzikiriakos. Southridge School, Surrey, B.C. Canada Jennifer Sailor. Osceola Middle School, Ocala, FL Andrew Sailor. Osceola Middle School, Ocala, FL Brianna Loo. South Pasadena Middle School, South Pasadena, CA Dan Dietz. Creekwood Middle School, Kingwood, TX Tiffany Chen. South Pasadena Middle School, South Pasadena, CA Dennis Gorshteyn. South Pasadena Middle School, South Pasadena, CA Yoori Yang,. Southridge School, Surrey, B.C Danny Kiswani. Seminole High, FL Katherine Wang.  South Pasadena Middle School, South Pasadena, CA Soo-Hyun Lee. Sauk Centre HS, Sauk Centre, MN Asher Tuggle.  CO Giuseppe Giannone.  Mantova, Italy. Nathan Waldruff Soo-Hyun Lee. Sauk Centre HS, Sauk Centre, MN Rebecca Sousa. Dartmouth High School, Dartmouth, MA Karina Shaw.  Laguna Beach High School, Laguna Beach, CA Dmitry Vagner.  Ranney School, Tinton Falls, NJ Lindsey Camara.  Dartmouth High School, Dartmouth, MA Alexander Taciuk. Southridge School, Surrey, BC, Canada Stefan Dragomir-Ene. Southridge School, Surrey, B.C., Canada Florian Jonker, Southridge School, Surrey, BC, Canada Alan Leung. Mississippi School for Mathematics & Science, Columbus, MS Alstyne Gravlee. St. Luke Middle School, Columbus, GA Kashish Singhal. Broadview Middle School, Danbury, CT Don Miller. Nikki Tan. Southridge School, Surrey, BC, Canada David Madfes. San Francisco Pat McHenry. Gloucester, NJ Dan Dietz. Creekwood Middle School, Kingwood, TX Rohit Bollineni. Power Middle School, Farmington Hills, MI Garrett Hix. Brookstone School, Columbus, GA Sahit Bollineni. Highmeadow Common Campus, Farmington Hills, MI Kurtis Osborne. Southridge School, Surrey, BC, Canada Michael Vishevnik. Mayank Patel. Point Pleasant Borough H S, NJ Daniel Pyon. South Pasadena Middle School, South Pasadena, CA Drew Wolfard. Kea'au Middle School, Kea'au, HI Jonathan Uesato, Milpitas Christian School, San Jose, CA Jon Gomes. New York, NY Roland Vyncke. Brugge, Belgium Ben Gieske. Sauk Centre HS, Sauk Centre, MN Joe Brophy, Boston, MA. Andy Drabic. Archbishop Hoban High School, Akron, OH Pamela Chretien. Hastings Middle School, Fairhaven, MA Magdy Essafty. Alexandria, Egypt Lusha ZHou, Qingdao, China Mike Hunt. Dr. Micheal M. Krop High School, Miami, FL Matthew Wong. South Pasadena Middle School, South Pasadena, CA Aashrita Mangu. South Pasadena Middle School, South Pasadena, CA Sagar Patel. Brookstone School, Columbus, GA Rin Sone. South Pasadena Middle School, CA Kristy Chang. South Pasadena Middle School, South Pasadena, CA Shyamala Gupta. Kate Mittermaier. Southridge School, Surrey, British Columbia, Canada Tony Chen. Beck MIddle School, Cherry Hill, NJ
	50% of respondents successfully answered this problem.

 

 Last Updated On: 3/6/06