A ship arrives in port trimmed 25 cms. by the stern. The centre of flotation is amidships. MCT I cm. 100 tonnes-m. A total of 3,800 tonnes of cargo is to be dischargedfr om 4 holds, and 360 tonnes of bunkers loaded in No. 4 double bottom tank. 1,200t onneso f the cargoi s to be dischargedfr om No. 2 hold and
600 tonnesf rom No. 3 hold. Find the amount to be dischargedfr om Nos. I and 4 holds if the ship is to complete on an even keel.