Question

in some quantity of ghee, 60% is pure ghee and 40% is vanaspati. if 10 kg of pure ghee is added, then the strength of vanaspati ghee becomes 20%. The original quantity was

Answer 1

ghee = g
vanaspati =v
g/v = 6/4 =3/2
3x +10/2x = 80/20 =4/1
3x +10 =8x
10 = 5x
x = 2
so 3×2 =6 nd 2×2 =4
so 6+4 =10 kg