Three friends divide Rs. 624 among themselves in the ratio $frac{1}{2}: frac{1}{3}: frac{1}{4}$ the share of the third friend is

Ratio $=frac{1}{2}: frac{1}{3}: frac{1}{4}=frac{1}{2} imes 12: frac{1}{3} imes 12: frac{1}{4} imes 12$

= 6 : 4 : 3

Sum of the terms of ratio

= 6 + 4 + 3 = 13

B’s share $=$ Rs $.left(frac{3}{13} imes 624 ight)=$ Rs. 144