gafat engineering ethio plc manufactures two types of TV set -LCD and CRT -both having only one model .the LCD and CRT television sets sell for usd 9,000 and usd 5000 respectively.the company sells its product through its own store and other outlets. total fixed expenses are usd 15,000 per month.variable expense for LCD USD 5,000 and for CRT usd 2,000 and monthly sale in unit for LCD usd 2,000 and for CRT usd 3,000.

required .1.break even total volume of sale and sales volume for each product.