Answer:
Hector purchased 5 black sweatshirts at $40, and 5 yellow short sleeve shirts at $25. He spent $65 in total.
Rachel purchased 5 red long sleeves shirts at $30.
Mercedes purchased 5 green short sleeve shirts at $25 and 5 long sleeve shirts at $30. She spent $55 in total.
Quinn purchased 10 navy sweatshirts and spent $80 in total.