Question

Please solve this question clearly..

Answer 1

triangle aef and triangle abc are similar triangles so
$\frac{ab}{ac} = \frac{ae}{ef} \\ \\ ab = ae + be = 8 \\ put \: values \\ \frac{8}{bc} = \frac{4}{3} \\ bc = \frac{8 \times 3}{4} = 6$