tricky maths sum i cant do it :S

[Adam_Glanza]

hey guys, this is for my sisters homework lol but were all baffled! ive tried for a while now and i think i need a few fresh brains heads to give me a hand lol

basically you start with two different numbers to begin with, and the answer has to be able to add into itself, and also times by the two figures.

so we started with for example 28 and 16, so as below

14 + 2 = 16

14 x 2 = 28

so 14 and 2 is the answer...

basically were stuck on 72 and 22. so something has to be able to add up to these numbers, and also times by eachother!

hope i made it clear enough lol

 

[Harvey]

18 and 4

18+4 = 22

18*4 = 72

 

[white-ep82]

as above, misread thequestion at first

 

[Adam_Glanza]

argh you clever sods lol!

heres another one as your so damn clever

112 and 23

 

[white-ep82]

16 + 7

just look for denominators of the higher number and total them to the lower

 

[Harvey]

its quite easy to work out.....

Take the lower number, 23

and work back. you have 22+1 = 23, but of course 22x1 = 22

so 21* 2, nope and thats 42

20 * 3 = 60

19 * 4 = 76

18 * 5 = 90

17 * 6 = 102

16 * 7 = 112

so thats your answer, 16 and 7

 

[Adam_Glanza]

i feel rather stupid now o well i knew there would be a clever clogs somewhere

thanks alot lads

 

[cole]

haha check out the homework club

 

[Dub-Se7en]

i am chuffing useless at maths, the other day i was putting some money away and had trouble figuring out what 260 + 133 was. i mean for f*cks sake! i am :homer:

 

[dac69er]

my maths is dire. i managed to get an HNC at college and did higher level maths, i have no idea how though????

 

[stuart]

haha check out the homework club

lmao
I raise my hand too for being shit at maths, that why calculaters were invented

 

[jamesbaa]

why do you need to be good at maths when the person sitting next to you is better and willing to help (even if they dont know it lol)!!!

 

[59bhp]

you think thats bad i went from doing a nd in vehicle maintanence to doing a degree in mechanical engineering.

Luckily i managed to make freinds with a few genius' who taught me the basics lol

 

[supernova]

ok here is my take on the 22 and 72 problem (can then use same technique to solve and 2 numbers)

so the product of the 2 has to equal 72 so call them x and y:

x*y = 72 .....(1)

and the sum has to be equal to 22 so:

x+y = 22 ......(2)

Just basically have 2 simultaneous equations.

arranging (2) gives

y = 22-x

plug this into (1) to give

x(22-x) = 72

x^2 - 22x +72 =0

factorising gives

(x - 4)(x-18) = 0

which gives

x = 4,18

when you put x=4 into (2) gives y = 18
and when you put x=18 gives y = 4,
so answer is 4 and 18.
Hope everyone understands and i didn't bore anyone. Btw i got a degree in theoretical physics

 

[jamesbaa]

I thought we were talking about maths not english, whats all this talk about x and y's

 

[white-ep82]

ok here is my take on the 22 and 72 problem (can then use same technique to solve and 2 numbers)

so the product of the 2 has to equal 72 so call them x and y:

x*y = 72 .....(1)

and the sum has to be equal to 22 so:

x+y = 22 ......(2)

Just basically have 2 simultaneous equations.

arranging (2) gives

y = 22-x

plug this into (1) to give

x(22-x) = 72

x^2 - 22x +72 =0

factorising gives

(x - 4)(x-18) = 0

which gives

x = 4,18

when you put x=4 into (2) gives y = 18
and when you put x=18 gives y = 4,
so answer is 4 and 18.
Hope everyone understands and i didn't bore anyone. Btw i got a degree in theoretical physics

simultanious equation breakdown for thise more complicated if anyone ever has any future need or plans to study maths may be worth remembering!

 

[white-ep82]

btw im sure i done this in GCSE maths not even A level....

 

[Dub-Se7en]

 

[supernova]

^^ haha btw simultaneous equations is deffo not a-level material, very early gcse stuff i think....

 

[p2d]

I failed my GCSE in maths..