Question

if the compound ratio of 7:5 and 8:x is 86:40 then x​

Answer 1

Answer:

Given

$\frac{ \frac{7}{5} }{ \frac{8}{x} } = \frac{86}{40}$

$\frac{7}{5} \times \frac{x}{8} = \frac{86}{40}$

$\frac{7x}{40} = \frac{86}{40}$

$7x = 86$

$x = \frac{86}{7}$