Question

There are twice as many boys as girls in the
class. If 20% of the boys and 35% of the girls
have already handed over their result cards,
what percent of the students have not yet
handed over their cards?
: (A) 25
(C) 55
(D) 75
(B) 15​

Answer 1

Solution:

⚘ There are twice as many boys as girls in the class. => B = 2G

⇸ let class have 90 students, 60 Boys and 30 girls.

⚘ If 20% of the boys and 35% of the girls have already handed over their result cards.

⇸ the students who have not submitted their report cards

→ 60*(100-20)/100 + 30*(100-35)/100

→ 60*80/100 + 30*65/100

→ 48 + 19.5

→ 67.5

⇸ the percentage who didn't hand over the report card

= 67.5/90*100

= 75.

Ans: So The Correct Answer Is 75~(Option D).

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