Monday, March 15, 2010

Algebra Puzzle Solution(:

3x4 grid

3x3 grid

My Solution:(3 x 3)
  • Let a represent apple.
  • Let b represent present box.
  • Let c represent gear.
  • 3a= 54
  • a= 54/3
  • Therefore, a = 18
  • Since 2a + c = 42
  • 2(18) + c = 42
  • 36 + c = 42
  • c = 42 - 36
  • Therefore, c = 6.
  • Since 2c + b = 17
  • 2(6) + b = 17
  • 12 + b = 17
  • b = 17 - 12
  • Therefore, b = 5
In conclusion, each apple represents 18, each present box represents 5 and each gear represents 6.

My Solution: (3 x 4)
  • Let a represent ice cream
  • Let b represent drum
  • Let c represent toy car
  • 3a + b = 74
  • 2a + b = 57
  • (3a + b) - (2a + b)= 74 - 57
  • a = 17
  • b= 57 - 2(17)
  • b= 57 - 34
  • b= 23
  • 2a + c = 44
  • 2(17) + c = 44
  • 34 + c = 44
  • c= 44- 34
  • c= 10
In conclusion, each ice cream represents 17, each drum represents 23 and each toy car represents 10.