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.
1 Comments:
Jing Jie
Well done!
The working is very systematic and clear :D
Indeed, you've picked good 'combinations' to form the equations :D
Post a Comment
Subscribe to Post Comments [Atom]
<< Home