September 2018 2 27 Report

W dwoch sloikach jest roztwor soli kuchennej . W I sloiku jest 0,5 kg roztworu 5%, w sloiku II jest 1 kg roztworu 10%.Ile soli trzeba dosypac i ile wody dolac do I sloika , aby w obu sloikach bylo po tyle samo roztworu i o takim samym stezeniu?


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