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
elena-14-01-66 [18.8K]
3 years ago
15

the ratio of number of girls and boys in a class of 30 students is 7:8. if 5 new boys students admit in the class. what will be

the ratio of number of girls and boys ?​
Mathematics
1 answer:
Stells [14]3 years ago
5 0
<h3>Given:</h3>

The ratio of number of girls and boys in a class of 30 students is 7:8

<h3>To Find:</h3>

The ratio of number of girls and boys if 5 new boys admit in the class.

<h3>Assumption:</h3>

Let the number of students be x.

<h3>Solution:</h3>

According to the question,

7x + 8x = 30

or, 15x = 30

or, x = \large {\tt {\frac{30}{15}}}

or, x = 2

7x = 7(2) = 14

8x = 8(2) = 16

There were 14 boys and 16 girls in the school.

After admitting 5 new boys, we get

14 + 5 = <u>19</u>

The ratio of number of girls and boys now is 16:19.

<h2>Answer:</h2>

<u>1</u><u>6</u><u>:</u><u>1</u><u>9</u>

You might be interested in
I'm clueless.
Alex Ar [27]
Beetle liked broccoli
worm liked tomato
snail liked corn
ladybug likes carrots
beetle likes peas
6 0
3 years ago
what is the probability that a number selected at random from the set {2,3,7,12,15,22,72,108} will be divisible by both 2 and 3?
evablogger [386]
First, look at how many numbers are divisible by 2 and 3. 
12,72, and 108 and are all divisible by both 2 and 3. That makes 3 out of 8 numbers.
Depending on what form you have to put the probability, that makes it 3:8, 3 out of 8, or 37.5% probability.
7 0
3 years ago
Which property is demonstrated <br> 9 * 3 * 4 = 4 * 3 * 9
mr_godi [17]
The commutative property of multiplication.
4 0
3 years ago
Please.... help<br><br>answer choices: right, acute, obtuse, scalene ​
Sergio [31]

Answer:

right angle

Step-by-step explanation:

It has a 90 degrees angle

5 0
3 years ago
Read 2 more answers
An athletic coach conducted an experiment to test whether a four-week stretching and flexibility program reduces the number of m
son4ous [18]

Answer:

The remaining 15 athletes did not participate in any type of flexibility program

3 0
2 years ago
Other questions:
  • RSM PROBLEM NEED HELP!!!!!!11If a grocer mixed 3 lbs of candy costing $1.7 per pound and 5 lbs of candy costing 90 cents per pou
    7·1 answer
  • The amount of daily time that teenagers spend on a brand A cell phone is normally distributed with a given mean of 2.5 hr and st
    9·2 answers
  • Find a formula for the described function. an open rectangular box with volume 6 m3 has a square base. express the surface area
    5·1 answer
  • Write a power that has a value greater than 190 and less than 200
    14·2 answers
  • Can earn 5 coins
    8·1 answer
  • Simplify − 11 50 (1.32 + 0.48). Give your answer as a decimal. − 11 50 (1.32 + 0.48) − 11 50 (1.8) −0.22(1.8)
    7·2 answers
  • Just #14 plz thanks!!!
    13·1 answer
  • Evaluate:<br> 4vw/-8 -|v| when v=-2 and w=3
    15·2 answers
  • Anyone think they could help me with this ?
    8·1 answer
  • Help only have a hour to do this
    6·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!