Question

Tom is 10 years old. His sister Lizzy is 4/5 Tom's age. Tom's mum is 4.25 times as old as Lizzy. How old is Tom's mum?

Answer 1

Tom's mum is 34 years old.

Explanation:

So, Tom is 10 years old, and Lizzy is 4/5 Tom's age. What you want to do is convert that fraction into a decimal which leaves you with 0.80. You then have to multiply 0.80 by 10, which gives you 8. After that, all you have to do is multiply 8 by 4.25, which leaves you with 34. This means Tom's mum is 34 years of age.