3. From concentrate shift balances, the total monthly feed to a copper mill was 29780t at 1.25% Cu. The weighted concentrate and tailings assays are 25.2%Cu and 0.53%Cu. The weight of the concentrate received at the smelter during the month was 1120.3t at 25.0%Cu. At the beginning of the month, 242t of concentrate was in transit and at the end of the month, 213t was in transit. Tabulate a metallurgical balance for the month production, showing unaccounted losses (or gains) of Cu and compare the actual to the theoretical recovery