Question

In a school 100 boys and 80 girls are examined ina test 48% of the boys and 30% of girls passed. The total number who failed will be

Answer 1

$In \: a \: school , \\Total \: number \: of \: boys = 100,$

$pass \: percentage \: of \: boys = 48\%$

$Fail \: percentage \: of \: boys \\= (100 - 48)\%\\= 52\%$

$Number \:of \: boys \: failed \\= 52\% \:of \: Total \: boys \\= 52\% \times 100 \\= \frac{52}{100} \times 100 \\= 52 \: ---(1)$

$In \: a \: school , \\Total \: number \: of \: girls = 80,$

$pass \: percentage \: of \: girls = 30\%$

$Fail \: percentage \: of \: girls \\= (100 - 30)\%\\= 70\%$

$Number \:of \: girls \: failed \\= 70\% \:of \: Total \: boys \\= 52\% \times 100 \\= \frac{70}{100} \times 80 \\= 56\: ---(2)$

Therefore.,

$\red {Total \: number \: of \: students \: failed }\\= (1) + (2) \\= 52 + 56 \\= \green {108 }$

•••♪

Answer 2

Answer:

40%bbbbbbbbbbbbbbbbbbbbbbbbbb