The blog postings are about the Singapore Math. The readers can learn from the postings about Solving Singapore Primary School Mathematics. The blog presenting the Math Concept, Math Questions with solutions that teaches in Singapore Primary Schools. You or the kids can acquire the skills to deal with Math Modeling, Math Problem Solving and Problem Sum from Lower Primary School to Upper Primary School level after reading the blog postings. This posting is a lower primary school math question on Problem Sum.
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Lower primary school mathematics question LPQ71
6 years ago, the age of Hairu’s father was 5 times the age of Hairu. Their total age now is 60. How old will Hairu’s father be in 2 years’ time?
6 years ago, the age of Hairu’s father was five times the age of Hairu
This year, both of them are 6 years older
The math model for based on this year age is
From the model
6 units = 60 – 12 = 48
1 unit = 48 ÷ 6 = 8 years
The age of father this year = 8 × 5 + 6 = 46 years old
In two years time, the age of father = 46 + 2 = 48 years old