Ratio between two numbers is 3: 4. Product of their H.C.F and L.C.M is 2028. Find sum of the numbers. 

The ratio of income of two persons is 5 : 3 and that of their expenditures is 9 : 5. If they save ₹ 1300 and ₹ 900 respectively. Their incomes are:

The No. of mangoes on three baskets are in the ratio of 3 : 5 : 7. In which ratio the no. of mangoes in first two baskets must be increase so that the new ratio becomes 5 : 6 : 8.

Income of A and B are in ratio 3:4 and their expenditure are in ratio 4:7 their saving are equal if A save Rs 1760 more and B increase his expenditure by Rs 880 then their saving are in ratio 7:4 .find the average income of A and B?

Divided ₹ 1250 among A, B, C so that A gets   $$ {2\over9}$$ of B’s share and C gets   $${3\over4}$$ of A’s share,

A box contains 280 coins of one rupee, 50-paise and 25-paise. The value of each kind of the coins are in the ratio of 8 : 4 : 3. Then the number of 50-paise coins is 

The ratio of the ages of two persons is 4 : 7 and the age of one of them is greater than that of the other by 30 years. The sum of their ages ( in years ) is 

In a certain school, the ratio of boys to girls is 7 : 5. If there are 2400 students in the school, then how many girls are there?