n:-━━━━━━━━━━━━━━━━━━━━━━━━━━◈ Here, the question has given us the selling price of a pressure COOKER that is Rs 330 and the profit% MADE by a man that is of 10%. Now, the question has aked us to FIND out the cost price of that pressure cooker. So to find the cost price of the pressure cooker we NEED to apply the formula of CP when profit% is given and the final digits will be our answer.ANSWER:-» Cost price of the pressure cooker is Rs 300.GIVEN:-⇝Selling price of the pressure cooker = Rs 330⇝Profit made by the man = 10%TO FIND:-⇝Cost price of the pressure cooker = ?FORMULA:-» CP when Profit Percent is given = (SP × 100 / 100 + Profit %)SOLVING BY APPLYING THE FORMULA:-» Selling price = Rs 330» Profit = 10%⇝Cost price = (SP × 100 / 100 + Profit %)⇝Cost price = (330 × 100 / 100 + 10)⇝Cost price = 33,000 / 110⇝Cost price = 33,000 / 110 = 300⇝Cost price = Rs 300Hence, we got our answer by the formula of CP when profit% is given. So, the cost price of the pressure cooker is Rs 300.Profit = (SP > CP) = SP - CPLoss = (CP > SP) = CP - SPProfit% = (Profit × 100 / CP)%Loss% = (Loss × 100 / CP)%SP when Profit Percent is given = (100 + Profit % / 100)× CPCP when Profit Percent is given = (SP × 100 / 100 + Profit %)SP when Loss Percent is given = (100 - Loss / 100)× CPCP when Loss Percent is given = (SP × 100 / 100 - Loss)━━━━━━━━━━━━━━━━━━━━━━━━━━