There were 560 T-shirts at a store. ⁵₇ of them were with collars. T-shirts with collars were priced at $8 each. T-shirts without collars were priced at $6 each. The store owner sold ¹₄ of the T-shirts with collars and ³₄ of the T-shirts without collars. How much did he collect from all the T-shirts he sold?
Number of T-shirts = 7 u

7 u = 560

1 u = 560 ÷ 7 = 80

Number of T-shirts with collars
= 5 u
= 5 x 80
= 400

Number of T-shirts with collars sold 
= ¹₄ x 400
= 100

Number of T-shirts without collars
= 2 u
= 2 x 80
= 160

Number of T-shirts without collars sold
= ³₄ x 160
= 120

Amount that the store owner collected from the sale of the T-shirts with collars
= 100 x 8
= $800

Amount that the store owner collected from the sale of the T-shirts without collars
= 120 x 6
= $720

Total amount that the store owner collected from all the T-shirts he sold
= 800 + 720
= $1520

Answer(s): $1520