Profit, Loss and Discount: Mixed Commercial Arithmetic

CP Rs. 500, MP 40% up, discount 20%, false weight 950 g/kg. Approximate gain%:

CP Rs. 720, MP 25% up, discount 10%. Profit is:

Marked 50% above CP, two discounts 10% and 10%. Net on CP:

A trader marks 30% above CP, allows 20% discount, uses 900 g weight. Total gain% approx:

CP Rs. 400, sold at 10% profit. If CP were 10% lower with same SP, profit% would be:

MP Rs. 1,100, discount 10%, CP Rs. 800. Profit% is:

Two articles: CP 600 (+20%), CP 400 (−10%). Overall profit% on Rs. 1,000:

CP Rs. 1,000, MP 20% up, discount such that SP = CP. Discount% is:

Successive 20% markup and 20% discount with CP Rs. 750. SP is:

CP Rs. 560, MP 25% up, discount 20%, plus 900 g weight. Approx total gain%:

If SP = MP and discount = 0, profit depends on:

CP Rs. 900, wants 10% profit after 10% discount on MP. Required MP is:

Overall: CP Rs. 2,400, SP Rs. 2,520. Same profit% if CP and SP both scaled by 2?