According to the rule of BODMAS
We have,
0.04 $$\div$$ 0.002 + 0.5 $$\times$$ 0.002 $$\div$$ 0.0004
= $$\frac{0.04}{0.002}+0.5\times\frac{0.002}{0.0004}$$
= $$20+\left(0.5\times5\right)$$
= 22.5
Hence, Option B is correct.
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