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
salantis [7]
3 years ago
7

At a festival 2/7 of the number of girls was equal to 3/5 of the number of boys. There were 165 fewer boys than girls, how many

children were at the festival in all?
Mathematics
1 answer:
koban [17]3 years ago
5 0
X=number of girls.
y=number of boys.
We can suggest this system of equations:
2/7 x=3/5 y ⇒10x=21y   ⇒x=21/10 y
y=x-165 

We can solve this problem by substitution method:
x=(21/10)(x-165)
10x=21x-3465
10x-21x=-3465
-11x=-3465
x=-3465 /-11=315

y=x-165=315-165=150

Number of children=number of girls + number of boys
Number of children=315 +150=465

Answer: there were 465 children  at the festival. 
You might be interested in
Four more than 3 times a number is 31. Find that number
SpyIntel [72]

Answer:9

Step-by-step explanation: 31-4=27

27÷3=9

7 0
3 years ago
Read 2 more answers
Convert degree measure to radians measure a. 60o<br> b. 90o c. 120o d. 150o
LuckyWell [14K]

What is the degree you're trying to convert?

3 0
3 years ago
Read 2 more answers
“Find 24% of $240.”<br><br> I keep trying and getting a different answer each time, please help
Nimfa-mama [501]

Answer:

$57.60

Step-by-step explanation:

The first thing you want to do is convert 24% to a decimal. To do this you just need to take the current decimal place and move it 2 places to the left. Since this percentage is a whole number the decimal is just after the 4.

(0.24)

Multiply that decimal by the number you want to find the percentage of

$240 * .24 = $57.60

8 0
2 years ago
Read 2 more answers
Help!<br> Algebraic Relationship <br> y= x/4-1
loris [4]

32, 7

0, - 1

20, 4

You just plug in the numbers and solve

3 0
3 years ago
A wooden rod of 5 m 75 cm was cut into 5 equal pieces. What is the length of each piece.
hram777 [196]

We have: 5m 75cm = 5.75 m

So the length of each piece is : l = \frac{5.75}{5} =1.15

ok done. Thank to me :>

6 0
2 years ago
Other questions:
  • SOMEONE PLZ HALP ME ON THIS ASAP! A fountain is made up of two semicircles and a quarter circle. Find the perimeter of the fount
    11·1 answer
  • 6.) Haven has 29 stickers to share with her 8 friends. How many stickers will each friend get if each friend gets the same amoun
    10·1 answer
  • I need help with question number 2. This is a tricky one.
    12·1 answer
  • What number can u multiply by √7 to get a rational number?
    12·1 answer
  • PLEASE HELP ILL GIVE BRAINLY IF CORRECT
    8·1 answer
  • What is the measure of angle 1 2 and 3
    6·1 answer
  • What are the values of a and b ?
    14·1 answer
  • The cost of a turkey, c, that is w pounds is represented by the equation c=0.87w What is the cost per pound for the turkey? How
    11·1 answer
  • Can some one help me with this ?
    5·1 answer
  • 4. Lynn can walk two miles intenta
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!