Solution
= 15% of 30% of 700
= $$\frac{15}{100}\times\frac{30}{100}\times\ 700$$
= $$\frac{15}{10}\times3\times\ 7$$
= $$\frac{3}{2}\times3\times\ 7$$
= $$\frac{63}{2}$$
= 31.5
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