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You can click here and read the posting on **A family in Singapore** about Sarin’s family.

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 UPQ320**

Fatimah’s age is 2/7 of her father’s. Her father will be 47 years old in 5 year’s time. In how many years’ time will Fatimah’s age be 5/11 of her father’s?

Solution:

Fatimah’s age is 2/7 fraction of her father this year

The model

Her father this year = 47 – 5 = 42 years old

Per the model

7 units = 42

1 unit = 6 years old

Fatimah this year = 2 × 6 = 12 years old

The fraction of Fatimah’s age to her father’s age is 5/11 after some years

The model

Or, rearrange the model

Per the model

6 units = 42 – 12 = 30

1 unit = 5 years

5 units = 25

After 25 – 12 = 13 years, Fatimah’s age is 5/11 farction of her father’s age

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