Question posted by Vincent from country unknown:

Question: ANSWER THIS QUESTION WITH A MODEL APPROACH: HARI AND FARIDTH HAVE \$120. HARI AND PETER HAVE \$230. PETER HAS 6 TIMES AS MUCH MONEY AS FARIDTH. HOW MUCH MONEY DOES HARI HAVE?

Step 1: Draw 1 box to represent the amount of money Faridth has and 6 boxes to represent the amount of money Peter has. Step 2: Draw another box to the left of Faridth to show the amount of money Hari has. Draw a bracket to show that the total of Faridth's and Hari's money is \$120. Step 3: Draw another box to the left of Peter to show the amount of money Hari has. Draw a bracket to show that the total of Peter's and Hari's money is \$230. Step 4: Draw a bracket to show that the difference between the amount that Hari and Peter have (\$230) and the amount that Hari and Faridth have (\$120), i.e., equals to "?". From the model,

\$230 - \$120 = \$110

5 units ----------> \$110

1 unit ----------> \$110 / 5 = \$22

\$120 - \$22 = \$98

Therefore, Hari has \$98.