You may also like

problem icon

First Forward Into Logo 6: Variables and Procedures

Learn to write procedures and build them into Logo programs. Learn to use variables.

problem icon

First Forward Into Logo 8: More about Variables

Write a Logo program, putting in variables, and see the effect when you change the variables.

problem icon

Geomlab

A geometry lab crafted in a functional programming language. Ported to Flash from the original java at web.comlab.ox.ac.uk/geomlab

Crime Figures

Stage: 4 Short Challenge Level: Challenge Level:2 Challenge Level:2

Let the number of cases solved in 2003 be $x$. This was $80\%$ of the number of cases, so there were $5x/4$ cases to solve in 2003. So the number of cases to solve in 2004 was $5x/4 \times 6/5$, which is $3x/2$. Inspector Remorse solved $60\%$ of the cases, which is $9x/10$. So there was a $10\%$ decrease in the number of cases solved.

 

 

This problem is taken from the UKMT Mathematical Challenges.
View the archive of all weekly problems grouped by curriculum topic

View the previous week's solution