The ratio of the length of the parallel sides of a trapezium is 3: 2. The shortest distance between them is 15 cm. If the area of the trapezium is 450 cm.2, the semi-sum of the length of the parallel sides is

The ratio between the third proportional of 12 and 30 and mean proportional of 9 and 25 is

If A : B= 3:4, B: C = 2:3 then A+B : B+C: C+A =?

A number is divided into three parts such that three times of the first part, six times of the second part and eight times the third part are equals to each other. If the first part is Rs. 1600, what is the third part?

Rahul divides some money among his three sons A, B and C. The ratio of amount received by A and C together to the amount received by B is 5:2. C received 150% of the amount received by A. If the amount received by C is Rs. 1500. Find the sum of amount received by A and B together.

In two types of brass ratio of copper and zinc are 8: 3 and 15: 7 respectively. The ratio in which these two types of brass should be mixed, so that the ratio of copper and zinc in this new type of brass become 5: 2 is 

If (a + b) : (b + c) : (c + a)  = 6 : 7 : 8 and a + b +c =14, then the value of c=

The Ratio of monthly incomes of Ram and shyam is 6:5 and their monthly expenditure are in the ratio of 4:3. If each of them save Rs. 800 per month, find the sum of their monthly incomes.