age question

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Erijkhan
Posts: 6
Joined: Mon Nov 26, 2018 2:06 pm

age question

Post by Erijkhan »

Alexander’s grandma is 5 times as old as Alexander was 3 years ago.
If Alexander’s grandma is 60, how old is Alexander?

What is the best way to answer this question for a 10 year old?
ToadMum
Posts: 11944
Joined: Wed Jan 18, 2012 12:41 pm
Location: Essex

Re: age question

Post by ToadMum »

Erijkhan wrote:Alexander’s grandma is 5 times as old as Alexander was 3 years ago.
If Alexander’s grandma is 60, how old is Alexander?

What is the best way to answer this question for a 10 year old?
- How old would Alexander be now, if Grandma was currently five times as old?
- now add 3 years to that age?
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Daogroupie
Posts: 11099
Joined: Wed Mar 04, 2009 3:01 pm
Location: Herts

Re: age question

Post by Daogroupie »

This is a VR question.

This type of question is known as Type Z.

They are my favourite question as if you just follow the logic they are straightforward.

Mods can you move it to the VR section pls?

Always start with what you know.

Grandma is 60 years old.

60 is 5 times older. 60 divided by 5 = 12

12 3 years ago so 15 now.

DG
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