The total weight of 2 dozen gold bars and 3 dozen silver bars is 960 gms. If the weight of a silver bar is 10 gms, What is the weight of a gold bar ?

A 20

B 22

C 24

D 25

Correct Answer: Option D

Solution: Total weight of 3 dozen silver bars is 10 \( \times \) 3 \( \times \) 12 = 360 gms

So, total weight of 2 dozen gold bars is 960 - 360 600 gms

Weight of 1 gold bar is 600/ (2 \( \times \) 12) = 25 gms