Question

question no.10 .solve it fast

Answer 1

$= > 0.25(4f - 3) = 0.05(10f - 9) \\ \\ = > 1f - 0.75 = 0.5f - 0.45 \\ \\ = > f - 0.5f = 0.75 - 0.45 \\ \\ = > 0.5f = 0.3 \\ \\ = > f = \frac{0.3}{0.5} \\ \\ = > f = 0.6$

Answer 2

Hope my answer helped you.