Ravi initially had a certain number of chocolates, while Bhanu initially had 80% of the number of chocolates that Ravi initially had. Ravi gave 10% of his chocolates to his sister while Bhanu received from his uncle another 35% of the number of chocolates he initially had. If Bhanu finally had 54 chocolates, how many chocolates did Ravi give to his sister

Correct option is C

Ravi initially had a certain number of chocolates, Bhanu = 80% of the number of chocolates that Ravi initially had.
Ravi gave 10% of his chocolates to his sister while Bhanu received from his uncle another 35% of the number of chocolates he initially had.
Bhanu finally had 54 chocolate.
Let total number of chocolates Ravi had is 100
Bhanu had 80 chocolates,
Total number of chocolates Bhanu have,
80 + 80 × 35/100 = 108
Value of 108 units = 54
1 unit = 0.5
So Ravi gave 10 × 0.5 = 5 chocolates to his sister.