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
nevsk [136]
4 years ago
9

Urgent please

Mathematics
2 answers:
svetoff [14.1K]4 years ago
5 0

Ratio of boys to girls in class

3 : 5 40

Boys + giris 3 + 5 = 8 Total 40

Unit of ratio - 40/8 = 5

Boys = 5 * 3 = 15 Girls = 5 * 5 = 25 Total 40

Add 3 new girls Girls 25 + 3 = 28

Minus 1 boy Boys 15 - 1 = 14

New ratio boys to girls is 14 : 28

Simplify 14/28 = 1/2

New simplified ratio of boys to girls is 1 : 2


Natasha2012 [34]4 years ago
4 0

Boys : Girls = 3 : 5


3 + 5 = 8 parts


<u>Find 1 part:</u>

8 parts = 40 students

1 part = 40 ÷ 8 = 5 students


<u>Find number of boys and girls:</u>

3 parts = 3 x 5 = 15 girls

5 parts = 5 x 5 = 25 boys


Original Number of students = 15 : 25


<u>Find new ratio:</u>

New Ratio = 15 + 3 : 25 - 1 = 18 : 24 = 3 : 4


Answer: 3 : 4

You might be interested in
Anita can clean a typical pool in 8 hours. Chao can clean a typical pool in 6 hours. How long should it take Anita and Chao work
ivanzaharov [21]
Anita can clean 1/8 portion of the pool in 1 hour

Chao can clean 1/6 portion of the pool in 1 hour

Both of them working together can clean 1/8 + 1/6 = 7/24 portion of the pool in 1 hour

Therefore, it will take both of the working together 1/(7/24) = 24/7 or 3 3/7 hours to clean a typical pool.
3 0
4 years ago
What is the property of 16-3 and 3-16
lilavasa [31]

Answer:

There isn’t a property for subtraction or division but there is for multiplication and addition. It’s called the commutative property.

Step-by-step explanation:

4 0
4 years ago
(25 + 19) + 15 = (19 + 25) + 15<br><br><br> What property is that equation
malfutka [58]

Answer:

Commutative Property

Step-by-step explanation:

It looks like Associative property which is when you change the GROUP, but actually it’s commutative because it didn’t change any numbers in the group, just the order of where they were.

Associative: (25 + 19) + 15 = (15 + 19) + 25

Commutative: (25 + 19) + 15 = (19 + 25) + 15

It didn’t change the numbers, only the order. Therefore, it would be commutative property

8 0
3 years ago
Read 2 more answers
After a series discount of 8/19/17, the net cost of a computer system is 908.69. What is the list price
pav-90 [236]

Answer:

huh

Step-by-step explanation:

8 0
3 years ago
What is the vertex of the parabola? <br><br> (-1, 0)<br> (0, -3) <br> (1, -4) <br> (3, 0)
lozanna [386]
The vertex of the parabola is (0,-3).
5 0
3 years ago
Read 2 more answers
Other questions:
  • What type of function is represented in the table? exponential linear quadratic logarithmic
    12·1 answer
  • Please I need help...
    11·1 answer
  • What is the product of 5.86 × 10–7 and 3.1 × 104 1. Write the expression: (5.86 × 10–7)(3.1 × 104) 2. Rearrange the expression:
    7·2 answers
  • Brianne solved a quadratic equation. Her work is shown below, with Step 2 missing.
    15·2 answers
  • Joseph borrowed a book from a library. The library charged a fixed rental for the book and a late fee for every day the book was
    5·2 answers
  • Anyone know the answer thanks a lot
    6·1 answer
  • Sally is working on a new recipe for her party. She needs to get 3.5 pounds of strawberries, 1 quart of milk, and 1 box of sugar
    6·2 answers
  • Read the excerpt from "Bone Detective."
    5·1 answer
  • Can a math equation be like this:
    15·1 answer
  • The area of a rectangle is 65 square feet, and the length of the rectangle is 3 feet less twice the width . Find the dimensions
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!