Low Yi Yin's answer to Lim jia an's Primary 5 Maths Whole Numbers Singapore question.
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Method: Algebraic Substitution
1) Find relationships between the two unknowns (no. of adult of tickets and concession tickets)
2) Make one of those equations simple such that only have one at one side ( x= 20-y) and sub into the other eqn
3) Find the single unknown
4) Sub into eqn 2 to get the second unknown
1) Find relationships between the two unknowns (no. of adult of tickets and concession tickets)
2) Make one of those equations simple such that only have one at one side ( x= 20-y) and sub into the other eqn
3) Find the single unknown
4) Sub into eqn 2 to get the second unknown
Date Posted:
1 year ago
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