Task# Chess Club

Illustrative MathematicsVaries

This problem includes a percent increase in one part with a percent decrease in the remaining and asks students to find the overall percent change. The problem may be solved using proportions or by reasoning through the computations or writing a set of equations. When using equations to solve the problem, the task of finding the number of club members this year can be accomplished in two separate steps by finding the appropriate percent of last year's members and then adjusting the number of members by this amount. Alternatively, the number can be determined in one step by finding the appropriate percent that will remain after the change.