If m : n = 1 : 2 and p : q = 3 : 4 , then what is (2m + 4p) : (n + 3q) equal to ?

If a:b=2:3, b:c=4:5, c:d=6:7 and a=24, then the value of a+b+c+d will be

The sum of three numbers is 98. If the ratio of the first to second is 2 :3 and that of the second to the third is 5 : 8, then the second number is:

A and B together have ₹1,210. If 4/15 of A's amount equals 2/5 of B's amount, how much does B have?

If (a + b) : (b + c) : (c + a) = 5 : 7 : 6, then what is the value of (a - b + c) : (a + b - c) ?

In a mixture 60 litres, the ratio of milk and water 2 : 1. If this ratio is to be 1 : 2, then the quantity of water to be further added is: