Answer :
This ratio can be written as 8x+5x =390
Add the variables
13x = 390
Divide by 13 to get the value of x
390/13 = 30
Answer:
Number of adult = 240 and Number of child = 150.
Step-by-step explanation:
Given : The ratio of adults to children is 8:5 of 390 people.
To find : find number of adult and children.
Solution : We have given
Ratio of adults to children is 8:5.
Let the number = x
Then number of adult = 8x .
Number of children = 5x .
Total = 8x +5x = 13x
Number of adult = [tex]\frac{8x}{13x}* 390[/tex].
Number of adult = 240 .
Number of child = [tex]\frac{5x}{13x}* 390[/tex].
Number of child = 150.
Therefore, Number of adult = 240 and Number of child = 150.
