M & P Contractor has 150 tons of sand and 90 tons of cement for building structures A and B for business. Structure A requires 1 ton of sand and 2 tons of cement whereas structure B requires 3 tons of sand and 1 ton of cement. If structure A is sold at shs. 40,000/= and structure B at shs. 60,000/=, how many structures of each type should be made in order to get maximum profit?

M & P Contractor has 150 tons of sand and 90 tons of cement for building structures A and B for business. Structure A requires 1 ton of sand and 2 tons of cement whereas structure B requires 3 tons of sand and 1 ton of cement. If structure A is sold at shs. 40,000/= and structure B at shs. 60,000/=, how many structures of each type should be made in order to get maximum profit?