If 36% of A = 64% of B, then A:B =

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

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

If x is the third proportional of 12 and 18 and y is the fourth proportional of 7, 11, 14, then the value of (3y + 2x)/(6y − 6x) is

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

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: