Question

$1800$ boys and $900$ girls appeared for an examination. If $42\%$ of the boys and $30\%$ of the girls passed, find
(i) number of boys passed
(ii) number of girls passed
(iii) total number of students passed
(iv) number of students failed
(v) percentage of student failed.

Answer 1

(i) Number of boys passed $=42$% of $1800=\frac{42}{100}\times 1800=756$

(ii) Number of girls passed $=30$% of $900=\frac{30}{100}\times 900=270$

(iii) Total number of students passed $=756+270=1026$

(iv) Total number of students failed $=(1800+900)-(756+270)=2700-1026=1674$

(v) Percentage of students failed $=\frac{1674}{2700}\times 100=62$%