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

In a mixture of three varieties of pulses, the ratio of their weight is 4 : 5 : 8. If 5 kg of pulses of the first variety, 10 kg of the second variety and some quantity of pulses of the third variety are added to the mixture, the ratio of the weights of three varieties of pulses becomes as 5 : 7 : 9 . In the final mixture, find the quantity of third variety of pulses was?

If 0.8 : X  :: 5 : 8 then X is equal to

Sum and product of two numbers is 11 and 18 respectively. What will be the sum of their reciprocals? 

A sum of ₹ 1550 was lent partly at 5 % and partly at 8 % simple interest. The total interest received after 3 years is ₹300. The ratio of money lent at 5 % to that at 8 % is

The monthly income of two persons are in the ratio 2 : 3 and their monthly expenses are in the ratio 5 : 9. If each of them saves ₹600 per month, then their monthly incomes are