Maths Type Question

[sherrardk]

Can anyone help me with this please? The things have recently been weighed at school and thing 1 is 65 kg and thing 2 is 72 kg. when they were born, thing 1 was 5lb 5oz and thing 2 was 6lb 14oz. Is the difference in their weight still the same ratio (or whatever the proper term is)? Thanks (I could probably work it out but I still wouldn't know if I had got the answer correct.)

[Stephen_G]

65kg = 143 lbs
72kg = 168.7 lbs

[sandyRoe]

child 1 is now 90% the weight of child 2.
When they were born... child 1 was 77% the weight of child 2

[ubasses]

thing 1 was 77.25% of thing 2 at birth and is now 90% .

[sherrardk]

Thank you! Would have taken me ages to work it out.

[DaisyNonna]

Why do you need to know if they are happy and healthy?

[sherrardk]

Hi Daisy, I was just curious. (I haven't been out of the house all week (chicken pox) so bored out of my skull!).

[bert_h]

No, the ratio isn't the same at all.

65 kilos is (about) 10 per cent less than 72 kilos.

6 lb 14 oz = 6 * 16 + 14 = 110 oz, so for the same ratio, 10 per cent less would be 99 oz. But 5 lb 5 oz is only 85 oz, which is way too much smaller to be covered by the approximateness of that 10 per cent. The lighter thing is definitely catching up.

[sandyRoe]

one is 10 Stone and the other is 12 stone, and both still at school. What are you feeding them on?

[sherrardk]

Jeez, sorry thing 1 is 16.5kg and thing 2 is 17.4kg (they are only 5!). Just checked the letters I got. Even said to himself how much they weighed earlier and he never thought it was odd! Even said there was 9 bags of sugar between them. (In my defence, I have been poorly.)

[ummmm]

lol

[Stephen_G]

Revised estimate...

16.5kg = 36 lbs (ish)
17.4kg = 38 lbs (ish)

[sherrardk]

I think I was off school when they did weights (and lengths, I'm rubbish at them too. Oh, and the 8 times table.)

[sandyRoe]

LOL. I thought it must have been growmore or something like that. :-)

[Prudie]

No thing 2 was about 30% bigger at birth and 10% bigger now.

[DaisyNonna]

Can understand that Sherr. Hope all will be well soon.
Grandaughter was 4lb 7oz at birth and now 14 years old towers over me at 5'7". Skinny as a rake but a talented dancer.
Just enjoy them.

[sherrardk]

Sorry for wasting your time Sandy. (I must seem like a right dimwit, didn't even twig that some grown ups weigh 72kg).

Methyl, why so nasty?

[sandyRoe]

You're not wasting anybodys time. More likely you're helping me and others pass a while. :-)

[sherrardk]

Cheers Daisy. I'm not worried, just soooo bored (and rubbish at maths).

[Nibble]

That's what I was thinking, sherr, as even now at an advancing age (middle), I've yet to achieve a weight of 72kg, and thought thing2 couldn't have got that big so quickly. Relax, they're both fine healthy children, and happy to swim/boot/be sporty, enjoy them. :)