Loryn, brian, and edna are donating book to the library. loryn donated 7 more books than brian. enda donated twice as many books as loryn. Together they donated a total of 53 books how many books did loryn donate

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?