What is the approximate percentageofall categories of children not in school and not working ?

Number of children not in school and not working in all categories (in millions) :

= $$(\frac{31.5}{100}\times13.02)+(\frac{40.8}{100}\times15.63)+(\frac{15.2}{100}\times1.79)+(\frac{18.6}{100}\times2.02)+(\frac{10.6}{100}\times8.44)+(\frac{14}{100}\times13.42)+$$

$$(\frac{5.8}{100}\times1.5)+(\frac{5.3}{100}\times1.93)$$

= $$14.08$$

=> Required % = $$\frac{14.08}{57.79}\times100\approx24.36\%$$

=> Ans - (D)