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A school has $63 ext{ extpercent}$ girls and $37 ext{ extpercent}$ boys. If $23 ext{ extpercent}$ of the girls wears contacts and $42 ext{ extpercent}$ of the boys wears contacts, what percent of all students wears contacts?$\newline$A) $30$.$21$%$\newline$B) $32$.$15$%$\newline$C) $33$.$45$%$\newline$D) $34$.$78$%