1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
algol13
3 years ago
11

At a school. Number of boys:number of girls=11:9. There are 124 more boys than girl. Work out the total number of students at th

e school
Mathematics
1 answer:
JulsSmile [24]3 years ago
5 0

Answer:

Total students = 1240

Step-by-step explanation:

Given that,

Number of boys: number of girls=11:9

\dfrac{x}{y}=\dfrac{11}{9}\\\\9x=11y ......(1)

There are 124 more boys than girls i.e.

x = 124+y .....(2)

Put the value of x from equation (2) in equation (1). So,

9(124+y) = 11y

1116 +9y = 11y

1116 = 2y

y = 558

Put the value of y in equation (2).

x = 124+558

x = 682

Total students = x+y

= 682+558

= 1240

So, there are 1240 students at the school.

You might be interested in
Describe and correct the error in finding the solution of the equation 2x=6x
kipiarov [429]
The error is that both sides of the equation have a variable. So if you were to combine your like terms, then you'd leave one side without a number and if your teacher is saying there is a left over number then it will be 0
6 0
3 years ago
The mean of x y and z is 20. find the mean of x-5 y+4 z-5
Dafna11 [192]

Answer:

18

Step-by-step explanation:

Sum of x, y and z = 20 × 3

                             = 60

x-5+y+4+z-5 = 60-5+4-5

                    = 54

Mean of x-5, y+4 and z-5

= 54 ÷ 3

= 18

7 0
2 years ago
A jar contains only​ pennies, nickels,​ dimes, and quarters. There are 21 ​pennies, 26 ​dimes, and 15 quarters. The rest of the
pshichka [43]

Answer:

14

Step-by-step explanation:

21+26+15=62 72-62=14 :)

8 0
2 years ago
Read 2 more answers
Im going to start giving hard questions now and who ever has the most professional answer or the correct answer gets brainliest.
PilotLPTM [1.2K]

Answer:

1. she has 30 ounces left

2. 4 left

3.8

Step-by-step explanation:

sorry cant do the rest :)

7 0
3 years ago
a plant grows at a constant rate. lokesh records the height of the plant each week. The unit rate is measured in inches per week
Slav-nsk [51]

I know you already got this answered, but I need points. Can I get brainliest?

7 0
3 years ago
Read 2 more answers
Other questions:
  • What is 5 medium apples divided by 475 calories?
    13·1 answer
  • 16. For quadrilateral ABCD, determine the most precise name for it. A(2,3), B (12,3), C(8,6) and D(5,6). Show your work and expl
    13·1 answer
  • Pls help I will mark brainlist if correct!! :)
    12·1 answer
  • A line passes through the point (-4,3) and has a slope of -4. Write an equation in slope-intercept form for this line. ( Please
    11·1 answer
  • Find the range of 5,3,1,1,3,3,4,4,4,1,1,4,2,2,5,5,5,2,5,5​
    6·1 answer
  • Carpenter A can make a table in 5 hours while carpenter B takes 6 hours to make a table. Working together. how long will A and B
    14·2 answers
  • If I get 100 dollars a week for four months how much will I have
    6·2 answers
  • The radius of the earth is about 4,000 miles. A) what is the approximate diameter of the earth? b) what is the approximate dista
    13·1 answer
  • During a snow storm, 7.2 inches of snow fell in 4 hours. How many inches fell each hour? *
    6·2 answers
  • Help again :) :) will give brainlist :)
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!