[" 12.Two numbers "x" and "y" are in the ratio "(5)/(6):(3)/(4)." By "],[" what per cent is "x" more than "y?]

x is what per cent of y?

x is what per cent of y ?

What percent of 3x is 6y if x = 4y ?

If 50%" of "(x-y)=30%" of "(x+y) ,what per cent of x is Y

If x :\ y=3:5 , find the ratio 3x+4y :8x+5y .

Find the numbers x and y if (x+3, y-6)=(5, 5) .

Two numbers x and y are respectively 20% and 50% more than a third number, x is how much per cent of y ? (A) 30 (B) 45 (C) 60 (D) 80