There were 280 T-shirts at a store. ³₄ of them were with collars. T-shirts with collars were priced at $11 each. T-shirts without collars were priced at $7 each. The store owner sold ⁵₆ of the T-shirts with collars and ³₅ of the T-shirts without collars. How much did he collect from all the T-shirts he sold?
Number of T-shirts = 4 u

4 u = 280

1 u = 280 ÷ 4 = 70

Number of T-shirts with collars
= 3 u
= 3 x 70
= 210

Number of T-shirts with collars sold 
= ⁵₆ x 210
= 175

Number of T-shirts without collars
= 1 u
= 1 x 70
= 70

Number of T-shirts without collars sold
= ³₅ x 70
= 42

Amount that the store owner collected from the sale of the T-shirts with collars
= 175 x 11
= $1925

Amount that the store owner collected from the sale of the T-shirts without collars
= 42 x 7
= $294

Total amount that the store owner collected from all the T-shirts he sold
= 1925 + 294
= $2219

Answer(s): $2219