A consultant required a mix design with a mean $28-$day compressive strength of $35$ MPa $($measured on standard cylinder$).$ A slump required is $50$ mm and OPC is the cement used. $20$ mm angular aggregate and its density is $1600k\frac{g}{m^3}.$ The aggregate specific gravity is $2\mathrm{.}60.$ For fine aggregate, it has a fineness modulus of $2\mathrm{.}60$ and specific gravity of $2\mathrm{.}58.$ No air entrainment is required. Please provide the mix design according to the ACI method. The procedure for the calculation should be complete with explanation and graph or figure referred. Make an assumption if necessary for the material that is not specified.