Solving Proportional Reasoning Example With a 3 to 7 Ratio Using Double Area Model

Solving Proportional Reasoning Example With a 3 to 7 Ratio Using Double Area Model

[tthirupathy]

First row of the matrix consist of 3 boys, 7 girls. 12 boys can be accommodated by 4 sets of 3 boys, thereby we need 4 sets of 7 girls which equals to 28. No division and multiplication. Good