a sales 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?