a builder needs 6.5 cubic meteres of concreate for a job the table below shows the mixture for concreate cement 2 parts sand 4parts smallstones 5 parts water 1 part how many cubic meters of sand does the builder need?
+37146 2 parts + 4 parts + 5 parts + 1 part = 12 parts total of which 4 parts are sand
4 out of 12 or 4/12 sand out of 6.5 cubic meters 4/12 x 6.5 =
4/12*6.5 = 2.167 cubic meters of sand
