PLZ HELP ME WITH THIS, I'VE BEEN STUCK ON THIS FOR A WHILE. You sell large and small pictures at a fair. You sell a total of 16 pictures and made a total of $350. If large pictures sell for $25 and small pictures sell for $20. How many of each did you sell?

My friends, this one is all about turning English into Algebra (labeling variables and solving accordingly)

Let x = the number of small candles sold

Let y = the number of large candles sold

You are given two pieces of information:

(1) Number of candles sold:  x + y = 28

(2) Revenue based on cost per candles sold:  4x + 6y = 144

Two equations, two unknowns -  Solving by substitution (x = 28 - y)

4 * (28-y) + 6y = 144

112 - 4y + 6y   = 144

112 + 2y          = 144

         2y         =   32

         y           =  16

If y = 16, back substitute to find x = 12

Double check using revenue generated:

4x + 6y = 144

4(12) + 6(16) =? 144

48     +  96    =   144

Resolved:  12 small candles, 16 large candles.