Please help me come up with a good word problem for systems of linear equations?

there are so many in text books and on the web but they all seem unneccessary. they give you stipulations that help you come up with each equation and then you can solve but they ask you to solve for something that should be easily obtainable anyway.

for example,

"The admission fee at a small fair is $1.50 for children and $4.00 for adults. On a certain day, 2200 people enter the fair and $5050 is collected. How many children and how many adults attended?"

if they can count how many people enter the fair, why don't they just count how may adults tickets they sell?

or "at a movie theatre, 2 drinks and a popcorn cost $8.00. and 3 drinks and 2 popcorns cost $12.00. how much does a drink cost and how much does a popcorn cost?"

why can't you just look at the menu and see?

I'm trying to find a more realistic problem that actually has a real value to show that this is a lesson worth learning

thanks

Please help me come up with a good word problem for systems of linear equations?city opera

problems involving mixing solutions

Please help me come up with a good word problem for systems of linear equations?performing shows opera theater

maybe you could write something like:

You check the menu at a store, popcorn costs $1, and soda costs $0.50. You have $5, and decide to buy 2 sodas and 1 popcorn. The store clerk gave you back $2.50. Find how much more you should get back.
If apples are $1.49 per pound and oranges are 3 for $1.00 how many shingles does it take to roof a barn?