. A housepainter mixed 5 gal of blue paint with every 9 gal of yellow paint in order to make a green paint. What ratio of gallons of blue paint to gallons of yellow paint will make the same shade of green paint?

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?