(i) CP = Rs. 1265, SP = Rs. 1253
Loss = CP - SP = Rs. (1265 - 1253) = Rs. 12
(ii) CP = ?, SP = Rs. 450, profit = Rs. 150
Profit = SP - CP
⇒ Rs. 150 = Rs. 450 - CP
⇒ CP = Rs. (450 - 150) = Rs. 300
(iii) CP = Rs. 3355, SP = Rs. 7355,
Here SP > CP, so profit.
Profit = SP - CP
⇒ Profit = Rs. (7355 - 3355) = Rs. 4000
(iv) CP = ?, SP = Rs. 2390, loss = Rs. 5.50
Loss = CP - SP
⇒ Rs. 5.50 = CP - Rs. 2390
⇒ CP = Rs. (5.50 + 2390) = Rs. 2395.50