If a varies jointly as b and the cube of c when a = 200 when b = 5 and c = 2. find a when b = 6 and c = 3?

Find the value of (3ab)/c when a=2, b=-1 and c=3

If a: b= 3 : 5 and b: c = 6 : 2 , find a : b : c

If a:b = 3:5 and b:c = 6:7, find a:b:c

Given that a varies directly with the cube of b. When a is 3,b is also 3. find b when a is 24.

A varies inversely as the square of B and A is 1, when B is 3. What is the value of B, when A is 3?

If a:b = 3 : 2 and b : c = 2 : 5, find a : c.

A varies directly as B and inversely as C. A is 12 when B is 6 and C is 2. What is the value of A when B is 12 and C is 3?

The value of a^3 + b^3 + c^3 - 3abc , when a = 87, b = -126 and c = 39 is :