Question

What is the ratio value shown by this double number line? 07 14 ? 28 35 0 2 4 6 8 10 Type your answer as a fraction.

Answer 1

`\begin{gathered} \text{The missing number is 21,} \\ \text{because it is the }multiple\text{ of 7.} \\ \Rightarrow7,14,21,28,35 \\ \text{Now, the ratio,} \\ \Rightarrow(7)/(2)=3.5 \\ \Rightarrow(14)/(4)=3.5 \\ \Rightarrow(21)/(6)=3.5 \\ \Rightarrow(28)/(8)=3.5 \\ \Rightarrow(35)/(10)=3.5 \\ So,\text{ the answer is }\Rightarrow3.5 \end{gathered}`