[tex]\huge\text{Hey there!}[/tex]
[tex]\mathsf{30\% \ of\ 70}\\\\\mathsf{=30\% \times 70}\\\\\mathsf{= \dfrac{30}{100}\times 70}\\\\\mathsf{= \dfrac{30}{100}\times \dfrac{70}{1}}\\\\\mathsf{= \dfrac{30\div10}{100\div 10}\times\dfrac{70}{1}}\\\\\mathsf{= \dfrac{3}{10}\times\dfrac{70}{1}}\\\\\mathsf{=\dfrac{3\times70}{10\times1}}\\\\\mathsf{= \dfrac{210}{10}}\\\\\mathsf{= \dfrac{210\div 10}{10\div10}}\\\\\mathsf{= \dfrac{21}{1}}\\\\\mathsf{= 21\div 1}\\\\\mathsf{= 21}[/tex]
[tex]\huge\text{Therefore, your answer is: \boxed{\mathsf{Option\ D. \ 21}}}\huge\checkmark[/tex]
[tex]\huge\text{Good luck on your assignment \& enjoy your day!}[/tex]
~[tex]\frak{Amphitrite1040:)}[/tex]
