In a school 50% of the students are younger than 10, 1/20 are 10 years old and 1/10 are older than 10 but younger than 12, the remaining 70 students are 12 or older. How many students are 10?

Answers

Answer 1

Answer: 10 students

Explanation:

Students younger than 10 = 50%

Students that are 10years old = 1/20 = 1/20 × 100 = 5%

Students that are older than 10 but younger than 12 = 1/10= 1/10 × 100 = 10%

Students that are 12 years or older

= 100% - (50% + 5% + 10%)

= 100% - 65%

= 35%

This means that 35% of the students are 12 years or older and we've been given the number as 70.

Let's say the total number of students is x. Therefore,

35% of x = 70

0.35 × x = 70

0.35x = 70

x = 70/0.35

x = 200

The total number of students is 200.

Therefore, the number of students that are 10years will be:

= 1/20 × 200

= 10 students

Therefore, 10 students are 10 years.


Related Questions

edhesive assignment 2: room area?

Answers

Explanation:

a, b, c, d, e = input("A ="), input("B ="), input('C = '), input("D = "), input('E = ')

print(float(a*b + sqrt(c**2-(a/2)**2) * a/2 * 0.5))

a, b, c, d, e = input("A ="), input("B ="), input('C = '), input("D = "), input('E = ') print(float(a*b + sqrt(c**2-(a/2)**2) * a/2 * 0.5))

What is program?

The program is an illustration of functions. Functions are groups of code segments that are executed when called or evoked

The calendar program

The calendar program in Python, where comments are used to explain each line is as follows:

#This checks for leap year

def leap_year(y):

if y % 4 == 0:

return 1 else return 0

#This returns the number of days in the month

def number_of_days(m,y):

if m == 2:

return 28 + leap_year(y)

elif m == 1 or m == 3 or m == 5 or m == 7 or m == 8 or m ==10 or m == 12:

return 31

elif m == 4 or m == 6 or m == 9 or m == 11:

return 30

#This returns the number of days left in the month

def days(m,d):

dayList = [0,31,59,90,120,151,181,212,243,273,304,334]

return dayList[m-1] + d

#This returns the number of days left in the year

def days_left(d,m,y):

if days(m,d) <= 60:

return 365 - days(m,d) + leap_year(y) else:

return 365 - days(m,d)

#The main begins here

#This next three lines gets input for date

day=int(input("Day: "))

month=int(input("Month: "))

year=int(input("Year: "))

#This gets the choice from the user

menu=int(input("Press 1 to calculate the number of days in the given month.\nPress 2 to calculate the number of days left in the given year.\nChoice: "))

#This prints the number of days in the month

if menu == 1:

print(number_of_days(month, year))

#This prints the number of days left in the year

elif menu == 2:

print(days_left(day,month,year))

Read more about Python functions at:

brainly.com/question/14284563

#SPJ7

The complete part of the question will be:

Assignment 3: Chatbot

What the code for assignment 3: chatbot Edhesive.

You are designing an ecommerce web application that will scale to hundreds of thousands of concurrent users. Which database technology is best suited to hold the session state in this example

Answers

Answer: Amazon DynamoDB

Explanation:

The database technology that is best suited to hold the session state in this example is the Amazon DynamoDB.

Amazon DynamoDB is a document database which helps in delivering high quality and fast cperformance at any scale. It can be used to scale to hundreds of thousands of concurrent users as it's multi-active, and has a durable database that has built-in security.

How do we calculate the BMI in python?
the formula is kg/m²

Answers

Answer:

height = float(input("Enter your height in m: "))

weight = float(input("Enter your weight in kg: "))

BMI = weight / (height/100)**2

print(f"You BMI is {BMI}")

Explanation:

The python code for calculating BMI is as follows -

height = float(input("Enter your height in m: "))

weight = float(input("Enter your weight in kg: "))

BMI = weight / (height/100)**2

print(f"You BMI is {BMI}")

Some conditions can also be added such as

if BMI <= 15:

   print("You are underweight.")

elif BMI <= 30:

   print("You are healthy.")

elif BMI <= 40:

   print("You are over weight.")

Andy is working on a project to build an accounting software program for his firm. He uses old programming modules that contained code to perform various processes and links them to create a complete system. Which approach does he apply to the program design?
A.
structured programming
B.
non-structured programming
C.
top-down approach
D.
bottom-up approach
E.
modular programming

Answers

Answer:

E.  modular programming

Explanation:

Andy is applying a design known as modular programming. This is basically a design in which the entire project is broken down into various parts known as modules. Each one of these modules performs a very different and unique task. As the modules are created they are linked together like pieces of a puzzle in order to form the entire project. This makes tackling a large project much easier and makes debugging problems much easier as well.

Other Questions
1. Which event most directly influenced the change referred to in this passage?O meeting of the Berlin ConferenceO outbreak of the Boxer RebellionO signing of the Munich PactO collapse of the Ottoman Empire Plssss help me cuhhh 6- Calcule a densidade demogrfica dos estados constates da tabela e aponte qual o mais povoado e o menos populoso 5.2. Suggest how ecologists used the data in the graphs to calculate the total volumeof water used by a tree in 24 hours. As a population grows past the ecosystem's ______ the size of the population will _____ until the size of the population stabilizes at a constant level How does Brutus react when he finds Cassius body? Describe how you could show that a compound is an acid the product of nine, y and x not simplified. What is the answer to these? And how do you do them? Brainliest to best answer Cul es la intensidad del campo elctrico a una distancia de 2 m de una carga de -12C? * If a box has 5 red, 3 green, and 4 blue jelly beans, then what is the probability of choosingat random a red jelly bean?7/12, 5/12, 1/12, 2/7 Which of these factors influenced president Lincoln decision to final issue the emancipation proclamation Which of the followingstructures is a rigidbarrier found outsideof the cell membranein the plant cell? If angle a has the terminal ray that falls in the fourth quadrant and cosine a equals 5/9 then determine the value of sin a in simplest radical form what is the constant rate change shown in the graph below? Given the following cash flows for a capital project for the Witter Corp., calculate its payback period and discounted payback period. The required rate of return is 8 percent. Cashflows: Year 0 = -50,000; Year 1 = 15,000; Year 2 = 15,000; Year 3 = 20,000; Year 4 = 10,000; and Year 5 = 5,000. The discounted payback period is True or false: A skeleton equation in chemistry shows the relative amounts of all materials in the reaction Which term best completes the diagram?O A. Goods and servicesB. InterestC. Natural resourcesD. Wages Please Help!!!! Write an exponential function. In your own words, describe the rate of change of this function and what the graph looks like. Solve: 8 (5 + 3) 1. What number are you distributing?2. Show your work3. Answer is?