What is the product of ( x ^ ( 2 ) )/( 6 y ); ( 2 x )/( y ^ ( 2 ) ) and ( 3 v ^ ( 3 ) )/( 4 x ); x \neq 0; y \neq 0

Julie goes to the sports store and spends $40.50 before tax. she buys a pair of shorts for $21.75 and 3 pairs of socks that each cost the same amount. how much does each pair of socks cost? $$