Fred's Sandwiches | December 16, 2013

Fred made egg sandwiches and tuna sandwiches in the ratio 2 : 3. He then made 12 more tuna sandwiches and the ratio changed to 1 : 3. How many sandwiches did Fred make in all? 

Thank you everyone! Here are the solutions that were sent to me:

Suzy's Beads | December 9, 2013

Suzy has some beads. 3/5 of the beads are yellow. The rest are red beads and blue beads. There are twice as many yellow beads as red beads. There are 30 more red beads than blue beads. Find the total number of yellow beads and red beads. 

Chemical Solutions | December 2, 2013

A 1.8 liter solution is made by mixing three chemicals. The ratio of the volume of chemical A to chemical B is 2:3. The ratio of the volume of chemical A to chemical C is 1:2. Find the necessary volume of chemical A to make the solution.

Thank you to everyone who sent their model to me! Look at the variety:

Dawn's Lace | November 25, 2013

Dawn has 5/6 yard of lace. She uses 4/5 of it for a dress and the rest for a jewel box. How much lace does she use for the jewel box?

School Fundraising | November 18, 2013

In a school fund-raising project, 40% of the total funds collected were from the teachers. Parents and students contributed the remaining amount. The parents contributed three times as much as the students. What percent of the total funds collected was contributed by students?