Evan has $2.55 more than Richard. Jonas has four times as much money as Evan. The three boys have $24.15 altogether. How much money does Jonas have?
Here's My Answer by Zach (Singapore)
Step 1: This question involves the Repeated Variable Concept and the Completing The Whole Concept. Since Jonas has 4 times as much money as Evan, we draw 4 boxes to represent Jonas and 1 box to represent Evan.