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# Basic Maths Question Watch

1. I'm dealing with a question where i'm using the following equation:

q = s / (s+t)

We know that q = 0.1 and t = 1

Thus I am trying to rearrange it to get s, I get as far as:

0.1s + 0.1 = s

But my maths is rather bad and I do not understand how it then advances to:

0.1 = 0.9s

Also what would the algebraic version of this equation to just find t or s?

Thank you
2. Simple enough;
0.1s + 0.1 = s

s - 0.1s = 0.1

0.9s = 0.1

s = 1/9
3. (Original post by hidden088)
I'm dealing with a question where i'm using the following equation:

q = s / (s+t)

We know that q = 0.1 and t = 1

Thus I am trying to rearrange it to get s, I get as far as:

0.1s + 0.1 = s

But my maths is rather bad and I do not understand how it then advances to:

0.1 = 0.9s

Also what would the algebraic version of this equation to just find t or s?

Thank you
To find t algebraicaly:

q =s/(s+t)
s=q(s+t)
s+t=s/q
t = (s/q) - s
4. Type it into http://www.myalgebra.com/algebra_solver.aspx
5. (Original post by alexs2602)
Simple enough;
0.1s + 0.1 = s

s - 0.1s = 0.1

0.9s = 0.1

s = 1/9
Thank you

What would s equal in terms of t and q? And likewise for t. Thank you very much again.
6. People beat me to it, thank you !
7. (Original post by JosephRedfern)
To find t algebraicaly:

q =s/(s+t)
s=q(s+t)
s+t=s/q
t = (s/q) - s
What s be algebraically? Also if you don't mind if I had this equation instead:

p = t / (s+t)

What would s and t equal in this one? Thank you very much! I hope I can grasp this once I see them all.
8. (Original post by hidden088)
What s be algebraically? Also if you don't mind if I had this equation instead:

p = t / (s+t)

What would s and t equal in this one? Thank you very much! I hope I can grasp this once I see them all.
q=s/(s+t)
q(s+t)=s
q(s+t)-s=0
qs+qt-s=0
s(q-1)+qt=0
s=-qt/(q-1)

for p=t/(s+t)

p(s+t)=t
ps+pt-t=0
t(p-1)+ps=0
t=-ps/(p-1)

s+t=t/p
s=(t/p) - t

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