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

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**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__