Question

a man purchased 5 pens for rs 200 and sold 3 pens for Rs 135. If he sold the remaining pens at the same selling rate find his profit or loss​

Answer 1

CP: rs 200- 5pens
SP: rs 135- 3 pens
He bought 1 pen for 200/5: rs 40
He sold 1 pen for 135/3: rs 45
He sold the 5 pens for 45*5: rs 225
Rs 225- Rs 200= Rs 25 is his profit