Solve this : (7.9% of 134) - (3.4% of 79) = ?

A. 7.3

B. 7.8

C. 8.1

D. 8.6

E. None of these

Answer: Option E

Solution(By Examveda Team)

(7.9% of 134) - (3.4% of 79)
$$ = \left( {\frac{{79}}{{10}} \times \frac{1}{{100}} \times 134} \right) - $$     $$\left( {\frac{{34}}{{10}} \times \frac{1}{{100}} \times 79} \right)$$
$$\eqalign{ & = \frac{{79}}{{1000}} \times \left( {134 - 34} \right) \cr & = \frac{{79}}{{1000}} \times 100 \cr & = \frac{{79}}{{10}} \cr & = 7.9 \cr} $$