Question

11÷ 5.5 , 3/10 + 2/5 + 1/3 , 9/20 ÷ 63/80​

Answer 1

Answer:

$11 \div 5.5 = 11 \div \frac{55}{10} \\ = 11 \times \frac{10}{55} = 2$

$\frac{3}{10} + \frac{2}{5} + \frac{1}{3} \\ = \frac{9 + 12 + 10}{30} \\ = \frac{31}{30}$

$\frac{9}{20} \div \frac{63}{80} \\ = \frac{9}{20} \times \frac{80}{63} \\ = \frac{4}{7}$

Answer 2

Answer:

$\frac{11}{5.5} \\= \frac{11}{\frac{55}{10}}\\ =11 \times \frac{10}{55} \\= \: \: \boxed{\bf{\underline{ \underline{2}}}} \\ \\ \frac{3}{10} + \frac{2}{5} + \frac{1}{3} \\ = \frac{9 + 12 + 10}{30} \\ = \frac{31}{30} \\ = \: \: \boxed{\bf{\underline{ \underline{ 1 \frac{1}{30} }}}} \\ \\ \frac{9}{20} \div \frac{63}{80} \\ = \frac{ \frac{9}{20} }{ \frac{63}{80} } \\ = \frac{9}{20} \times \frac{80}{63} \\ = \: \: \boxed{\bf{\underline{ \underline{\frac{4}{7} }}}}$