a) 27
b) 25
c) 21
d) 19
Answer: c
Explanation:
$$\eqalign{
& 12x = \frac{{ {75 \times 336} }}{{100}} \cr
& x = \frac{{ {75 \times 336} }}{{ {100 \times 12} }} \cr
& x = 21 \cr} $$
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