Reply to: The interior angles of a triangle are

[minestrone]

Its true I only hold a degree. I did start a phd while at the mod but give it up for the filthy lucre of the city (sorry atw).

Well if you had any degree of quality you would know chucking about +20 & +30 makes no sense.

You have to quantify what you put down.

[minestrone]

Are we expecting a whole number here?

[BrilloPad]

I can see you have no mathematical ability beyond the basic level you hold.

Its true I only hold a degree. I did start a phd while at the mod but give it up for the filthy lucre of the city (sorry atw).

[BrilloPad]

I can't work it out. Can someone post the solution, with workings?

The solution is to give the cleaner 1. Or if you are MTT give her 2.

[minestrone]

The interior angles of a triangle are :-

5x+3y
3x+20
10y+30

What is x+y?

I can see you have no mathematical ability beyond the basic level you hold.

[Diver]

Stopit OwlHoot, you'll confuse the boy

[OwlHoot]

I can't work it out. Can someone post the solution, with workings?

k2p2 posted a link to the solutions, but one can solve it in a slightly different way (although much the same in principle)

(5x + 3y) + (3x + 20) + (10 y + 30) = 180 gives 8x + 13y = 130, i.e. 8(x + y) = 5(26 - y)

Because 5 is prime relative to 8, it must divide x + y, which is say 5z, giving 8z = 26 - y, i.e. 13z = 26 + x (adding x + y (= 5z) to both sides)

But that means 13 must divide x, which is say 13t, so that (13t + y) = 5(2 + t), i.e. y = 10 - 8t, which for positive x and y forces t = 1.

[mudskipper]

I can't work it out. Can someone post the solution, with workings?

http://www.mathcomp.leeds.ac.uk/b_file.php?id=469

Q25

[KentPhilip]

I can't work it out. Can someone post the solution, with workings?

[SimonMac]

(duplicate post)

[SimonMac]

What is x+y?

The 24th and 25th letters of the traditional English alphabet

[Doggy Styles]

That's one thing the Romans DIDN'T do for us - give us a bloody zero.

[TimberWolf]

So, given the full question, my answer is invalid.

Yes, it appears that 0 isn't a positive integer (based on a two second search).

[SupremeSpod]

Would the answer be one of the following;

A 15
B 14
C 13
D 12
E 11

If that's "rule of thumb", it's no wonder you keep trying to sever yours!

[Diver]

So, given the full question, my answer is invalid.

x=0, y=10, x+y = 10 = invalid