Directions: Study the following data and answer the following questions.

There are Red, Blue and Pink valves in a box. The number of Red valves is 5 more than the number of Pink valves. The number of Pink valves is 5 more than the number of Blue valves. The ratio between the number of Red and Blue valves is 2 : 1. The ratio between the price of a Red, price of a Blue and price of a Pink valve is 6 : 5 : 4. The average price of a Red, a Blue and a Pink valve is Rs. 25.