Свежие грибы содержат 90%влаги , сушеные грибы-12%.сколько сушеных грибов выйдет из 880кг свежих?

1) 90-12=78% влаги потеряют грибы при сушке
2) 880 кг - 100%
    х кг - 78%
х=880*78/100=686,4 кг - масса, которую грибы потеряют при сушке
3) 880-686,4=193,6 кг - масса сухих грибов

1 кг (это 100%) свежих грибов содержит 10% грибы и 90% влаги
с 1 кг свежих грибов получается 220 грамм  сушеных грибов (10% грибы и 12% влаги) 
880*220=193600 грамм=193,6 кг сушеных грибов получится из 880 кг свежих.
ответ 193,6 кг.

I am grateful for this year after all!) The more I thank him so that I had more friends, acquaintances, began to devote more time to the parents, for me it was the best year of his most vivid impressions!) My friend appeared the dog with which we often played in the summer!) I tried to be Yeshe better and improve ourselves!) I like it could be difficult, but I tried!) I bragodaren everything and for everything they have done for me and was carried out at the time!) me in the next year will be even better !)

I am grateful for this year after all!) The more I thank him so that I had more friends, acquaintances, began to devote more time to the parents, for me it was the best year of his most vivid impressions!) My friend appeared the dog with which we often played in the summer!) I tried to be Yeshe better and improve ourselves!) I like it could be difficult, but I tried!) I bragodaren everything and for everything they have done for me and was carried out at the time!) me in the next year will be even better !)