Home Back to the Challenge Try These Think About This... Did You Know? Resources Try Another Challenge
Answer
Figure This!
 

Quick Answer:

Sites C and E have the most similar percentages.

 

 

Complete Solution:

Using the hint, find the difference in the percentages of each material at each pair of sites and sum these differences. The resulting information can be arranged in a table as shown. In this table, the cell in row A, column B, corresponds to the sum of the differences for sites A and B, or 90%. (Since there is no difference between a site and itself, the corresponding cells have 0% as entries.)

 
A
B
C
D
E

A

0%

90%

100%

100%

64%

B

90%

0%

110%

84%

84%

C

100%

110%

0%

124%

36%

D

100%

84%

124%

0%

104%

E

64%

84%

36%

104%

0%

The pair of sites with the smallest sum (36%) is C and E. This indicates that the percentages of materials at the two sites are the most similar.

 
   
Home · Back to the Challenge · Try These · Think About This  ·  Did You Know? · Resources
Try Another Challenge · Challenge Index · Math Index · Printing the Challenges · En Español
Family Corner · Teacher Corner · About Figure This! · Purchase the CD
©2004 National Council of Teachers of Mathematics
Web site and CD-ROM design/production
© 1999-2004 KnowNet Construction, Inc.