Correct Answer - Option 1 : 50 liters

**Given****∶**

Pinku 10 liters final ratio

**Formula Used****∶**

a ∶ b ∶∶ c ∶ d

then, a/b = c/d

**Calculation****∶**

Given ratio = 6 ∶ 5

Let the quality of Pepsi be 6x and Coke be 5x

When 10 liters more Pepsi is added, the quantity of Pepsi be 6x + 10

So, the final ratio will be

(6x + 10)/5x = 7/5

⇒ 30x + 50 = 35x

⇒ 5x = 50

⇒ x = 10

Quantity of Coke = 5x = 5 × 10 = 50 liter

**∴ ****50 liters Coke is added in the solution.**