In an economic region three products are produced and exported: services (S), electricity (E) and oil (O). We know the internal (within region) use of service, electricity and oil required to produce units of each for export. The relationships are given by: Se = 0.05*Sp + 0.30*Ep + 0.30*Op Ee = 0.50*Sp + 0.05*Ep + 0.50*Op Oe = 0.50*Sp + 0.60*Ep + 0.05*Op If we are to export 15 units of service, 25 units of electricity and 15 units of oil, what total production of service, electricity and oil is required? Hints: Consider the production requirements as: E = M*P Where E is the export array, and P is the internal use array Since there are no imports, the total production of each product will equal the units exported plus the units of internal use.