If x, y, z are positive integers such that x : y = 1 : 2 and y : z = 3 : 5, then which one of the following will be possible value of 5x − 3y + z?

If x^3 – y^3 = 117/8 and x – y = 3/2 then the value of x^2 + xy + y^2 will be

If x³ + y³ = 35 and xy = 6, x > y, then value of (x − y) will be

From the following equations x² + y² = 41 and x⁴ − y⁴ = 369 the value of x and y will be respectively

If x + 1/x = 2, then the value of (2x² + 2)/(3x² + 4x + 3) will be:

If bc + cd = 2bd and a + c = 2b, then which one of the following is correct?