PLEASE DO APPLICATIONS OF SYSTEM OF EQUATIONS BEFORE CLICKING THIS PLZ Two teachers, Mr. Donahue and Mrs. Ortiz, decide to buy mechanical pencils and rulers for their
classrooms. Mrs. Ortiz buys 50 mechanical pencils and 30 rulers for $55. Mr. Donahue buys 30
of each for $45. What was the price per mechanical pencil? What was the price per ruler?

The answer is 270 cars.you can do this by making a proportional relationship. for instance, 200 is the whole we are using, so on a “number line” 200 would be over 100%. now, since he sells 35% more, add 35% to 100% to get 135% on the other side of the “number line” on the bottom half, leaving the top half empty.cross multiply 200 by 135 then divide by 100 to get your answer. i hope this , if it did, , if you don’t mind, giving me brainiest! 200/100% } 200 • 135 /100 ? /135%

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step-by-step explanation: sorry if not correct becaude my brother is loud and i could not think!