Product X requires 1.8 kg of a raw material per finished unit. The material has a weight loss of 10% in preparation for manufacture. Inventory of the material is currently 420 kg but needs to be increased to 500 kg. 2.000 units of Product X are to be manufactured. How many kg of the raw material needs to be purchased to satisfy the above requirements?
The ans is 4080 but for some reason am getting 4040 instead, please assist