A family in Singapore part 27 (Math Question)

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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 will able to acquire knowledge of dealing 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 an upper primary school math question on Fraction and Problem Sum.

Read also the posting on Sarin learns the concept of Fraction (mathematics concept) to understand the concept of Fraction.

Challenge yourself with the question before look for the given solution‼!

Upper primary school mathematics question UPQ314

Hairu is 1/5 of his father’s age 6 years ago. Their total age now is 60. How old will Hairu’s father be in 2 years’ time?

Solution:

Hairu is 1/5 of his father’s age at 6 years ago

The math model for based on this year age

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