molefenthabiseng83 molefenthabiseng83

08-04-2021
Mathematics

contestada

1.7. In a Maths class, the girl to boy ratio is 7:5.
If there are 20 boys, how many girls are in the class?

Respuesta :

08-04-2021

Answer:

28 girls

Step-by-step explanation:

Let total students be ‘X’

No of girls = (X-20)

Girls/Boys=7/5=(X-20)/20

7(20) =5(X-20)

140=5X-100

5X=240

X = 240/5

X =48

So, Total Students are 48

No of girls = (X-20) = 48-20 = 28

Answer Link

Otras preguntas

The sum of 2 consecutive odd integers is 92. Find the numbers. If x represents the smaller integer, then the larger integer is x + 1 x + 2 2x + 1

I theater sells tickets for a concert. Tickets for lower-level seats sell for $35 each and tickets for upper-level seats sell for $25 each. The theater sells 35

What type of person might have a low resting rate ps I put math cause I thought I can get a answer faster.

Consider the exponential function f(x) = 3(1/3)^x and its graph Which statements are true for this function and graph? Check all that apply. The initial value o

In the letter to titus where is titus said to be ministering

PLEASE HELP ASAP!!! CORRECT ANSWERS ONLY PLEASE!!! You are receiving a list of important advice from your grandparents. Fill in the blank with the correct affir

A circle has a diameter of 12 units, and its center lies on the x-axis. What could be the equation of the circle? Check all that apply. (x – 12)2 + y2 = 12 (x –

Which equation represents the perpendicular bisector of the given line segment?

Why must ice cream be cooled below 0 before is freezes?

Could I get some help?