Alexa needs 20.5 pints of blueberries to make jam. She picked 7.75 pints on Friday and 4.25 pints of Saturday. How many more pints does she need to pick?

You’re ordering more thread for blue jeans co. you usually purchase from ted’s threads, which sells 12 thread spools for $27. you recently received a notice from wade's wares that says you can buy thread from them for $2.30 each for the first 2 dozen and $2 a spool thereafter. you need to order 5 dozen spools. what percentage can you save by going with wade’s wares?