15 kg to 1200 gm find the ratio

Two boys weigh 25 kg and 20 kg. Find the ratio of their weights.

If the average weight of the students of a class is 15kg, the average weight of the students of another class is 30kg and average weight of the students of both the classes is 25kg, then find the ratio of the number of students of the first class to the another class.

If the ratio of H.M. and G.M. between two numbers a and b is 4:5, then find the ratio of the two number?

A person earns Rs. 1200 per day and spends Rs. 800. Find the ratio of his savings to expenditure.

suppose the cost of 1kg almonds is 1000 and cost of 1kg cashew nut is 1200. If we added together then the cost is 1051 per kg then find rhe proportion of their cost

Find the ratio of the price of coffee to that of tea, when coffee costs Rs. 24 per 100gm and the tea costs Rs. 80 per kg.