21. A retailer purchases a chair for RM300.,The buying expenses for the chair

amounts to RM5. Operating expenses for the chair are 25% of the cost. The

retailer makes a 15% net profit based on cost when the chair is sold. Find the

(a) retail price of the chair.

(b) gross profit made.

(c) breakeven price of the chair.

(d)maximum markdown per cent that he could offer to a customer so as not to incur any loss or make any profit.