In a herd of animals, all except 35 are cows, all except 30 are buffaloes, and the remaining are goats. If the total number of cattle/animals in the herd is 40, what is the number of goats?

In a cage, all except 12 are ducks, all except 11 are peacocks, and all except 17 are parrots. If there are only these three types of birds in the cage, how many total birds are there in the cage?

Determine the relationship between Quantity I and Quantity II based on the information below: Quantity I: Rohit has a certain amount. He invests 40% of the amount in compound interest at 20% p.a. (compounded annually) for 2 years and the remaining amount in simple interest at 10% p.a. for 2 years. If the total interest earned by him after 2 years is Rs. 5,920, find the amount invested in simple interest. Quantity II: The cost price of an article is Rs. (C - 1,000). It is marked 60% above its cost price and sold after allowing a discount of Rs. 2,160. If the profit earned is Rs. 3,600, find the selling price of the article.