bob and his dad visted the hardward store on sunday. They observed the following transaction: Mr harris bought 4 for $.05, Mrs Clarke bought 21 for $1.00, Mr Montaro bought 1,134 for $2.00 and Ms. Park bought 450 for $1.50. What were they buying?

Answer 1

http://www.jiskha.com/display.cgi?id=1283200990