Asales manager noticed that the number of units sold two t-shirt style a and style b, was the same during june and july. in june, total sales were $2779 for two styles, with a selling for $15.95 per shirt and b selling for $22.95 per shirt. in july, total sales for two styles were $2385.10, with a selling at the same price and b selling at a discount of 22% off the june price. how many t-shirts each style were sold in june and july combined?