A is 150% of B and B is 40% of C. If A + B + C = 20, then the value of 2B + 3C - 4A is equal to:

16  14 20 15

14

40% = \(\frac{2}{5}\)  & 150% = \(\frac{3}{2}\)  Ratio of B : C = 2  :  5 &   A  :   B  =  3   :  2 So , A : B : C = 3 : 2 : 5 ATQ , (3+2+5)R = 20 10R = 20 1R = 2 So , A = 6 , B = 4 , C = 10 Now , 2B + 3C - 4A = 2 × 4 + 3 × 10 - 4 × 6 = 8 + 30 - 24 = 14