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@dietrich_harmon how? ;o
Let early tickets be \(x\). Since there are 200 total, late tickets must be \(200 - x\). You also know that the sum of all tickets is $1340. So: \[5x + 7(200-x) = 1340\] Does that make sense to you?
@geoffb So it really is C?
I thought so @geoffb. I thought it was A.
Did you work out the formula above? Does it make sense how I got it and what it means?
So Id end up with 4x+1400=1340?
No, not 4x.
\[5x + 1400 - 7x = 1340\]
Very good! So once you solve for x, a very important step is to go back and look at what you chose x to represent. In this case, we chose for it to represent tickets purchased early. If we had let it represent tickets purchased late, you would end up with x = 170, but the answer *wouldn't* be A, because it is looking for tickets purchased early, not late.
Does that make sense?
OH so its B
Yes, and you can test it if you want (I would if you were doing a test. 30 early tickets x $5 = $150 170 late tickets x $7 = $1190 Total ticket revenue = $1340
You're welcome! :)