# A family in Singapore part 62 (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, the Math Questions with solutions that teaches in Singapore Primary Schools. You or the kids will able to acquire knowledge of dealing with the Math Modeling, the Math Problem Solving and the 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 solving.

Read 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 UPQ578

Sarin, Hairu and Fatimah are member of Bedok Swimming Club. The swimming club has 5510 members. 2/5 of the adults are men. 2/3 of the children are boys. There are 2420 male members. How many adults are there?

Solution:

Per the model,

2A + 2C = 2420

1A + 1C = 1210

2A = 5510 – 2420 + 1210 = 1880

1A = 940

The number of adults = 5 × 940 = 4700

Alternative solution:

The number of female member = 5510 – 2420 = 3090

From the model,

Comparing male and female × 2,

4U = 6180 – 2420 = 3760

1U = 940

The number of adults = 5 × 940 = 4700