If a 50 liters mixture of milk and water is in the ratio of 3 : 2. After removal of 10 liters mixture, 12 liters milk and 12 liters water is added into the mixture. Find the final ratio of water and milk in the mixture.

What is the total compound interest on Rs.45000 for 3 years when the sum is divided into a ratio of 4 : 5 and rate of interest on a small sum is 10% and 20% on the large sum? (Compounded annually)

The cost of printing a book increased from Rs. 96 to Rs. 120 from the year 2013 to 2018, such that the total money spent on printing books by a printing press increased in the ratio 5 ∶ 6. If the printing press printed 200 books in the year 2013, how many books did they print in the year 2018?

In the given question, two equations numbered l and II are given. Solve both the equations and mark the appropriate answer.

I. x² + 31x + 240 = 0

II. 5y²+ 60y + 135 = 0

In the given question, two equations numbered l and II are given. Solve both the equations and mark the appropriate answer.

I. x²+ 19x + 78 = 0

II. 45y²+ 83y + 28 = 0

In the given question, two equations numbered l and II are given. Solve both the equations and mark the appropriate answer.

I. x² - 28x + 195 = 0

II. y²- 21y + 108 = 0

In the given question, two equations numbered l and II are given. Solve both the equations and mark the appropriate answer.

I. x² - 19x + 60 = 0

II. y²- 20y + 99 = 0

In the given question, two equations numbered l and II are given. Solve both the equations and mark the appropriate answer.

I. x²+ 35x + 306 = 0

II. y² + 41y + 408 = 0