Answer:
3) girls = 24% = 456
let the total number of students be = x



the total number of students is 1900
4) increase = 20%
new salary = 24000 rupees
let his original salary be = y






his original salary is 20,000 rupees
The second choice! I hope my math is right!
The value of p is -5
Simply use cross multiplication :
The process of multiplying numbers in the shape of a fraction is called cross multiplication. Cross multiplying, also known as cross multiplication, is the process of multiplying the numerator of one fraction by the denominator of the other fraction on the other side of an equal symbol. Cross multiplication is a method for comparing fractions.
Both fractions with like and unlike parts are multiplied across. When employing the cross-multiplication procedure, we multiply the denominators as well as the numerators when a fraction is dissimilar, or when the denominators of two fractions are not alike.

To learn more about cross multiplication visit: brainly.com/question/29190202
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The x becomes negative because the negative sign at the start of the parenthesis distributes to everything inside parenthesis so x becomes -x and the double negative becomes +6 so that is why