Solve this : 30% of 1225 - 64% of 555 = ?

A. 10.7

B. 12.3

C. 13.4

D. None of these

Answer: Option B

Solution(By Examveda Team)

Given,
30% of 1225 - 64% of 555 = (?)
$$\eqalign{ & = \left( {\frac{{30}}{{100}} \times 1225} \right) - \left( {\frac{{64}}{{100}} \times 555} \right) \cr & = \left( {367.5 - 355.2} \right) \cr & = 12.3 \cr} $$