Job Recruitment Website - Property management company - Ming Kai community afforested 680 square meters last year, and this year's afforested area is 520 square meters less than last year's three times. today ...

Ming Kai community afforested 680 square meters last year, and this year's afforested area is 520 square meters less than last year's three times. today ...

680x3-520 =1520m2

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Buy back 600 souvenirs and distribute them to class 12. There are 60 copies left How many souvenirs are distributed per class on average?

600-60=540 copies

540- 12 = 45 copies