Option 2 : Rs 220

**Given:**

Gain = Rs 200

Measuring instrument = 10% less

**Formula used:**

S.P. = C.P. + Gain

S.P. = C.P. – Loss

Profit% = (Profit/C.P.) × 100

**Calculation:**

Let’s calculate profit earned on 1000 ml

⇒ Profit in rupees = 200

⇒ Cheating in percentage = 10%

⇒ Instead of 1000 ml he sells milk = 1000 – (10% of 1000)

⇒ Instead of 1000 ml he sells milk = 900 ml

⇒ Difference in ml = 100

Now, for 1000 ml he gains Rs 200

⇒ for 100 ml his gain = 200 × (100/1000)

⇒ for 100 ml his gain = 20

⇒ Total profit = 200 + 20

**∴**** Total profit of milkman is Rs 220**