Question 94404
Hi,<br />

Firstly, I'd like to say it was great to see you've had an attempt. that's not really normal on this site.<br />

It seems like you have the right idea by considering the amounts and concentrations(well prices) but you've got the amounts a bit wrong. I'll look at your equation in 3 parts:<br />

The first thing you say is 1.25X. This is X gallons at a price of $1.25 I'm happy with that, because the probelm says "How much fuel that sells for $1.25 per gallon"<br />

Then you add (2.00)(180-X). This I don't understand. Here you are saying the amount of $2.00 fuel you put in is 180-X which is 180 minus the amount of $1.25 fuel you put in. This is not what the question says It says "must be mixed with 180 gallons that sells for $2.00 per gallon". It doesn't matter what X is, we always add 180 gallons of the stuff. So this should be 2(180)<br />

The final part  (1.55)(180) is also wrong, if you take X gallons of $1.25 fuel, and 180 gallons of $2.00 fuel, then how many gallons of fuel do you have in total? 180+X right?<br />

So you should have the equation 1.25X + 2*180 = 1.55(180+X). Solving that should give you the correct answer, I'll leave the rest to you.<br />

Kev