Question 978319
Jess sold 70 items in 2 sizes.
The large size sells for $12 each and the small size sells for $8 each.
The $ received from the sales of the large items = the $ received from the sales of the small items.
How many large items were sold? 
I can get the answer = 28, but I can't set it up algebraically. 
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L + S = 70
12L = 8S
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Substitute for "S" and solve for "L"::
12L = 8(70-L)
20L = 8*70
L = (7/2)8
L = 28 (# of Large items sold)
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Cheers,
Stan H.
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