11 Plus Exams Forum

Hi.What is the best way of explaining the answer to dd.

"Peter's grandma is 5 times as old as Peter was 3 years ago.
If Peter's grandma is 55,how old is Peter ?"

Gran's current age = 55 = 5 times something

55 divided by 5 = 11

therefore Peter was 11 three years ago

therefore he is (11+3) years old now i.e. 14.

We know that Peter's grandma is 55. If you divide this by 5, because she is 5 times as old as Peter was 3 years ago, you get 11. This is the age Peter was 3 years ago. So how old is he now? 11 plus 3 = 14. He is 14.

The greatest explaining you need to do is how a she became a grandmother at the age of 39.

Thanks v much.Thought I was going mad as the answer was "13" !

mystery wrote:The greatest explaining you need to do is how a she became a grandmother at the age of 39.

- or at 41...

Either way, I'm afraid in some places I have worked in, either would have been regarded as an abnormally long intergenerational gap and prompted demands for investigation of infertility

(MIL had DH at 19; by choice, we started our family in our late 30s. MIL complained that she was too young to be a grandmother . DD (12) had a friend in yr6 whose mum is even now 13 years younger than I was when I had DD!).

MIL complained that she was too young to be a grandmother

my Dad complained that , at 68, he was far too young to be a grandfather...


I am 55..and am hoping that it will be a long while before I am a grandmother!

I was too old to be a mother at 41. That's not totally true; it is just my ds is so wild. If he had been a quiet, well behaved, er, girl, life would have been a lot easier.

I wouldn't have wanted dc in my twenties or early thirties. But I didn't plan one at 40. I thought it was impossible to get pregnant at 40! How stupid!

When I worked elsewhere in the country one grandma was 31, her daughter was in Year 10 when baby arrived.

That is shocking.

Oops! I can't subtract properly. Must be because I am granny age.