Precalc please help

Ashley and Stephanie went shopping for Father's Day at the same store. Stephanie spent $105 for 2 t-shirts and 3 pairs of shorts. Ashley bought 3 t-shirts and 2 pairs of shorts for $95. What was the cost of a pair of shorts? (Hint: The equation for Ashley's purchases is 37 + 25 = 95 First determine the equation for Stephanie's purchases and then solve the system of equations using matrices.) $17 for shorts $25 for shorts $15 for shorts $10 for shorts