Percentage

3a + 8b = $\frac{7}{3}$

so,

=(9a+24b)b

=3(3a+8b)b

=3 $\times$ $\frac{7}{3}$ b

=7b

The percentage:

$\frac{7}{16}$ $\times$ 100 = 43.75%

7/10*100=43.75