Moles and M Question!?

Note that 12g of C = 1 mole of C. From the 2nd equation this would produce 2 moles of CO. AND the 3rd equation indicates that 3 moles of CO are used up to produce 3 moles of CO2. But only 2 moles of CO were produced and used up. So this will produced 2 moles of CO2 i.e (2 x 44) = 88g of CO2.