A Math Forum Project

Technology Problem of the Week Logo Challenging problems based on our Problems of the Week that take advantage of interactive 
math tools

MathTools || All Problems of the Week

Print This Problem

209: A Million Penny Project

[Spanish version]

Amir’s student council is planning to save one million pennies during the school year next year, starting Monday, September 1 and ending no later than May 31. Each of the 428 students promises to donate $1.00 to the project each Monday.

A neighboring school volunteers to help. In that school 531 students agree to donate $0.10 each per weekday, but they won’t start until January 1. Amir creates a spreadsheet to make a presentation to the student council on how long it will take them to finish their project.

Create a spreadsheet to track their project. At this rate, when will the schools have combined to collect a million pennies?

Extra: After 3 weeks of saving, the students at the first school decide to reduce their contribution to $0.75 each per week. Adapt your spreadsheet to determine if they will have collected their million pennies by the ending date at this rate. If so, when? If not, how much will they have by May 31?

Use the submit link below to get hints and also chances to revise.

Submit your answer to  "A Million Penny Project"

If you are under 13, you must have permission from your parent or teacher to participate in this web project. You will be asked to provide the email address of your parent or teacher when you register. At any time, parents or teachers may request that we remove personal information by writing to removal@mathforum.org or by contacting us via postal mail or telephone (800-756-7823).

[Privacy Policy] [Terms of Use]

Math Forum Home || Math Library || Quick Reference || Math Forum Search

© 1994-2009 Drexel University. All rights reserved.
Contact the Problem of the Week administrators
The Math Forum is a research and educational enterprise of the Drexel School of Education.The Math Forum is a research and educational enterprise of the Drexel School of Education.