Maths Homework Help

[rockyracoon]

Please God, can someone help with my daughters homework.

The HCF of 2 numbers is 6. The LCM of the same two numbers is 72.
What are the numbers?

I'm twisted and my head hurts.

Please help :)

[fiction-factory]

The trouble is, Togo, that site gives the wrong answer for the LCM

[Togo]

Ah that's better 864 and 6.

[fiction-factory]

That site is wrong

[Togo]

Wow rocky tell your gal we love homework.

[Jonathan-Joe]

The numbers are 8 and 18.
2 is the only factor they share.
72 is divisible by both.

[rockyracoon]

Many thanks to you all, you've been a great help. Poor daughter has a test tomorrow and she's really worried, she's a high achiever but maths seems to stump her for some reason.

FF, you answer seems to make sense to her, so, many thanks to you.

[fiction-factory]

The HCF we want though is 6 though not 2

[fiction-factory]

divebuddy- LCM of 12 and 18 is 36 not 72

[zebo]

6 and 12

Factors of 72 are 2x2x2x3x3

Split that to give 3x2 and 3x2x2

[fiction-factory]

Sorted now, I think the answer is now agreed as 6 and 72. Sorry I jumped in and threw things off track initially by misreading it

[zebo]

Scrub that, can we have a self edit feature?????

[fiction-factory]

But the LCM of 6 and 12 is 12 not the 72 we need, zebo

[fiction-factory]

Agreed zebo- i could have done with an edit button earlier!

[Jonathan-Joe]

Rocky - when you hear, could you please let us know the teacher's answer.

[Togo]

http://www.bbc.co.uk/bitesize/ks3/maths/algebra/linear_sequences/revision/5
This looks better 12 and 18.

[rockyracoon]

Lol, yes Jonathan. But I have every faith in Fiction-Factory :)

[fiction-factory]

But, J-J, again the LCM of 12 and 18 is 36 not the 72 we need

[Jonathan-Joe]

Fiction - did I give 12 as an answer?