In an examination out of 80 students, 85% of the girls and 70% of the boys passed. How many boys appeared for the examination if the total pass percentage is 75%?

Q. $1800$ 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.

Q. In an examination $2500$ students appeared out of which $1100$ were girls. $50\%$ of the boys and $40\%$ of the girls passed the examination. What percentage of the candidates failed in the examination?

Q. $1200$ boy and $650$ girls appeared in examination. If $70$% of boy and $40$% of girls failed. Find the approximate percentage of passed students?

Q. 400 students took a mock exam in Delhi. 60% of the boys and 80% of the girls cleared the cut off in the examination. If the total percentage of students qualifying is 65%, how many girls appeared in the examination?

Q. The ratio of the number of boys and girls who participated in an examination is $4:3$. The total percentage of candidates who passed the examination is $80$ and the percentage of girls who passed is $90$. The percentage of boys who passed is ____.