1 formulate an algebraic formulae ?

A company manufactures mountain and racing bikes each mountain bike is sold at sh 6375 and a racing bike is sold at sh 9000 . A racing bike requires 6 kilogram at of aluminium while a mountain bike requires 4 kilogram of aluminium Aluminium cost sh 750 per kilogram it costs the company sh 375 per hour to assemble each bike (irrespective of model) it takes 1 hour to assemble a racing bike and 2hours to assemble a mountain bike . There are 4800 kilogrammes of aluminium available and a total of 1600 hours available for assembly . Required to formulate  the algebraic linear programming problem?