A trader sells 40 metres of cloth for Rs 8,200 at a profit of Rs 25 per metre of cloth. How much profit will the trader earn on 40 metres of cloth ?

• A. Rs. 800
• B. Rs. 1,000
• C. Rs. 600
• D. Rs. 1,200

Answer: (B)

S.P. per metre = 8200/40                        = Rs. 205∴ C.P. per metre = Rs. (205 - 25)                           = Rs. 180∴ C.P. of 40 metre cloth= Rs. (40 x 180)                                     = Rs. 7200∴ Gain = Rs. (8200 - 7200)           = Rs. 1000