ANSWERS: 1
  • Let floor plan #1 contain x houses. Then floor plan #2 contains 3x. The total is 56 houses, therefore x + 3x = 56. To solve this equation, add up the left hand side then divide both sides by the factor of x, namely 4: 4x = 56 4x / 4 = 56 / 4 x = 56 / 4 = 14. It follows that the floor plan #1 contains 14 and floor plan #2 contains three times that, or 42 houses, making a total of 56 houses. All of which illustrates the power of Mathematics through this simple example.

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