If 1.5 a=0.04 b then .

The weight of a bucket full of water is 36 kg. If the weight of a half-filled bucket is 21 kg, what will be the weight of the empty bucket?

In a group of 15 women, 7 have nose studs, 8 have ear rings and 3 have neither. How many of these have both nose studs and ear rings? 

If 2x + 3y - 5z = 18 , 3x + 2y + z = 29 and x + y + 3z = 17 , then what is the value of xy + yz + zx ? 

If 12x – 15 y =9x + 5y, the value of is

If 0.5x + 0.7y=0.5 and 0.7x + 0.5y=0.7,then the value of x+y is

If , then the value of is

then the value of x is