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

determine whether each statement describes capitalism or mercantilism

. The sum of -8 and a number is at least 9 what is the equation look like

What type of communication occurs when top-level executives in an organization seek feedback from white-collar employees at all levels of the organization? a.

Please help :( I'm marking brainiest! Jeremy wants to buy some snacks. He walks four blocks east and two blocks south to get to the closest convience store from

QuickSlim Inc. has been running the same infomercial for the past year. It claims one can lose 10 pounds the first week and 5 pounds every week after that. Sale

The atomic number of lead is 82. Its mass number is 207?.how many protons neutrons and electros does the atom of lead contain

What is 996 divide by 12

Find the total change in the internal energy of a gas that is subjected to the following two-step process. In the first step the gas is made to go through isoch

Suppose you deposit $2,000 in a savings account that pays interest at an annual rate of 4%. If no money is added or withdrawn, determine how much will be in the

5. Jeremy bought a $60 pair of sneakers on sale for 15% off. Then, he used a coupon that gave him an additional 10% off. Can Jeremy find the cost of the sneaker