Question

Of 400 people at the school carnival, 95% are students and the rest are teachers.

A. How many students are at the school carnival?


B. if 55% of the students at the school carnival are boys, how many are girls?



C. How many teachers are at the school carnival?


D. if 35% of the teachers are male and the rest are female, how many female teachers are at the carnival?

Answer 1

Answer: Hence, A) 380, B) 171, C) 20, D) 13

Explanation:

Since we have given that

Total number of people at the school carnival = 400

Percentage of people who are students = 95%

A) Number of students are at the school carnival is given by

`(95)/(100)* 400\\\\=95* 4\\\\=380`

B) if 55% of the students at the school carnival are boys, how many are girls?

Percentage of students who are boys = 55%

Percentage of students who are girls is given by

`100-55=45\%`

Number of girls is given by

`(45)/(100)* 380\\\\=0.45* 380\\\\=171`

C) How many teachers are at the school carnival?

Percentage of people who are teachers are given by

`100-95=5\%`

Number of teachers at the school carnival is given by

`(5)/(100)* 400\\\\=0.05* 400\\\\=20`

D. if 35% of the teachers are male and the rest are female, how many female teachers are at the carnival?

Percentage of teachers who are male = 35%

Percentage of teachers who are female is given by

`100-35\\\\=65\%`

Number of teachers who are female is given by

`(65)/(100)* 20\\\\=0.65* 20\\\\=13`

Hence, A) 380, B) 171, C) 20, D) 13