a) The proportion to represent the number of girls in

Helen Lewis

Helen Lewis

Answered question

2021-12-17

a) The proportion to represent the number of girls in the school.
Given:
At a school, the school population is 25 boys and there are 450 students at the school who are boys.
b) The steps to solve the equations.
c) The number of girls in school.
Given:
The population, 25x=450

Answer & Explanation

Durst37

Durst37

Beginner2021-12-18Added 37 answers

a) Concept used:
Rules of Addition/Subtraction:
- Two numbers with similar sign always get added and the resulting number will carry the similar sign.
- Two numbers with opposite signs always get subtracted and the resulting number will carry the sign of larger number.
Rules of Multiplication/Division:
- The product/quotient of two similar sign numbers is always positive.
- The product/quotient of two numbers with opposite signs is always negative.
Calculation:
In order to find proportion to represent the number of girls in the school, observe the that the proportion of boys is 25, so subtract it from 1 and similify further as:
125=5525
=525
=35
Thus, the proportion of girls in school is 35.
Becky Harrison

Becky Harrison

Beginner2021-12-19Added 40 answers

b) First from the given equation we find the total number of students in school and then the number of boys in school is given in question. So we can find the number of girls in school.
nick1337

nick1337

Expert2021-12-28Added 777 answers

c) Calculation:
Let the number of total students in school is x. then since the boys proportion is 25 and the number of boys in school is 450. So, the expression to represent the situation is
25x=450, now simplify further as shown below:
25x=450
25x5=450
2x=2250
2x2=22502
x=1125. Total number of students.
So the number of girls are.
=1125-450
=675
Thus, the number of girls in school is 675.

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