Две шкурки ценного меха общей стоимостью 2250р. были проданы на аукционе с прибылью, 40%. какова стоимость каждой шкурки отдельно, если от первой было получено 25% прибыли. а от второй - 50%?
Пусть стоимость первойшкурки - х, стоисомть 2й - у. Стоимсоть с прибылью 1й: х+0,25х; Стоимсоть с прибылью 2й: у+0,5у. Общая стоимость с прибылью: 3150+40%=3150р. Составим и решим систему уравнений:
х+у=2250; х+0,25х+у+0,5у=3150
Выразим из первого уравления у через х и подставим во второе уравнение: у=2250-х х+0,25х+2250-х+0,5(2250-х)=3150 х+0,25х+2250-х+1125-0,5х=3150 х+0,25х-х-0,5х=3150-2250-1125 -0,25х=-225 х=900 стоимость 1 шкурки Стоимость второй: 2250-900=1350р
I want you to tell, as I rested this summer. The first month of holidays spent in the preparation of for the competition, which took place in the Tauride this urban village. The competition was fun, though, we took the last place. After the competition me and my parents went to rest in Kazakhstan was a lot of fun . I was in Astana saw many very interesting. When I came home, I had at school internship. In practice, we help the school, performing various jobs.
In the evening I went for a walk with friends. After practice I went to the city of Omsk. In the city I'm good had a rest. Home When it rained, I heard the music and watched movies. These holidays I spent the gut. Write me, how did you spend your holiday!
I want you tell you how I vacationed this summer. The first month of vacation left for training for the competition, which took place in the Tauride is an urban village. At the competition was fun, though, we took penultimate place. After the competition, I went with my parents for a vacation Kazakhstan was a lot of fun. I was in Astana saw a lot of very interesting things. when I came home, I had to go to school practice. In practice we have help the school, performing various jobs. In the evenings I went for a walk with friends. After practice, I went to the city of Omsk. In the city I had a good rested. Home, When there was rain, I heard the music and watched movies. this vacation I spent the gut. Write me how you spend your vacation!
стоисомть 2й - у.
Стоимсоть с прибылью 1й: х+0,25х;
Стоимсоть с прибылью 2й: у+0,5у.
Общая стоимость с прибылью: 3150+40%=3150р.
Составим и решим систему уравнений:
х+у=2250;
х+0,25х+у+0,5у=3150
Выразим из первого уравления у через х и подставим во второе уравнение:
у=2250-х
х+0,25х+2250-х+0,5(2250-х)=3150
х+0,25х+2250-х+1125-0,5х=3150
х+0,25х-х-0,5х=3150-2250-1125
-0,25х=-225
х=900 стоимость 1 шкурки
Стоимость второй: 2250-900=1350р