Question

3\(\dfrac{1}{2}\) : 0,4 = x : 1\(\dfrac{1}{7}\)

Answer 1

`7/2 : 2/5 = x : 8/7`

`35/4 = x xx 7/8`

`x = 35/4 : 7/8`

`x = 10`.

Answer 2

\(\dfrac{\text{7}}{2}:\dfrac{4}{10}=x:\dfrac{8}{7}\)

\(\text{x}.\dfrac{7}{8}=\dfrac{7}{2}x\dfrac{5}{2}=\dfrac{35}{4}\)

\(x=10\)