# Math Help - need help with algebra equation

1. ## need help with algebra equation

10 + 2Q = 10 + Q + 100/Q

so Q = 10

How do i reach 10 the 100/Q part is confusing me.

Thanks.

I suspect i am in the wrong section sorry about that.

2. ## Re: need help with algebra equation

Hang on, just so we're clear, is this your equation: \displaystyle \begin{align*} 10 + 2Q = 10 + Q + \frac{100}{Q} \end{align*} ?

3. ## Re: need help with algebra equation

its 10 + 2Q = 10 + Q + 100/Q and i need to solve for Q Basically its for a businesses marginal cost = average total cost. in order to minimize costs mc=atc

4. ## Re: need help with algebra equation

500/q + 20q= 40q

Therefore,
q= 5

another same type... don't understand the divide.

5. ## Re: need help with algebra equation

Originally Posted by Lisa1714
500/q + 20q= 40q

Therefore,
q= 5

another same type... don't understand the divide.
I do not understand your last question. You are going to get a term divided by q whenever you are computing average costs and total costs has a component of fixed costs. You can see why if you look at the answer I gave to your prior question (which unfortunately I could not answer within the time frame that you needed). Or are you asking how to solve this type of equation? Please remember that you have to make your questions comprehensible to us; we are not mind readers.