Please show step by step, thank you

(Section 2.5) 20 points 5. Consider an open economy with consumption matrix 1/2 1/4 1/4 C = 1/2 1/8 1/4 1/2 1/4 1/8 If the open sector demands the same dollar value from each product-producing sector, which such sector must produce the greatest dollar value to meet the demand? Is the economy productive