Rini Kusyuniati's answer to Rosie's Primary 5 Maths Fractions Singapore question.
Is it correct did u check?
With that reasoning it should be right
Ok
Why is it not 40 though
Because you are calculating both their ages together. So every year, the J’s age will increase by 1 and the dad’s age will also increase by 1. Collectively their age increase by 2. That’s why u have to devide 40 years by 2 as their age increase was added twice
Oh ok
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