Mathematics, 24.04.2021 15:50 Emilyvite6251

A mixture of sand, cement and ballast is in the ratio of 5:1:3.If the cost of 7 tonnes of sand is sh.3000,5 tonnes of cement sh.50000 and 8 tonnes of ballast sh 4000.Find the cost of 7 tonnes of the mixture...plz show the working

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A mixture of sand, cement and ballast is in the ratio of 5:1:3.If the cost of 7 tonnes of sand is sh...