В латуни отношение массы цинка к массе меди равно 2 3 .Какова массам цинка ,если в латунной детали 2,4 кг меди? Помогите плиз срочно надо....

1)+ 2)- The weather was wonderful. 3)+ 4)+ 5)-My mother gave me breakfast - Some salad, porridge and a ham sandwich. I drank coffee with milk and was ready for my morning walk with my friends. We were all free - no school, no classes. We me 6)+ 7)+ 8)+ 9)+ 10)- After lunch we went to the park and had a good time there riding our bikes.

2,4:3=0,8 кг приходится на одну часть0,8*2=1.6 кг цинка========================