The ratio of adults to kids attending a play is 8:5 based on this ratio if 390 people attend how many are kids
390 was the total, so
number of adults --- 8x
number of kids ----- 5x
8x+5x = 390
13x = 390
x = 30
so 240 adults and 150 kids
check:
240+150 = 390
240 : 150 = 24:15 = 8 : 5
5/13 = x/390
Cross multiply and solve for x.
To find the number of kids attending the play, we need to determine the part of the whole based on the ratio.
First, let's calculate the total number of parts in the ratio:
8 + 5 = 13
Next, we'll find the value of each part by dividing the total number of attendees by the sum of the ratio:
390 / 13 = 30
Therefore, each part represents 30 people.
To find the number of kids, we multiply the number of parts representing kids (5) by the value of each part (30):
5 x 30 = 150
So, there are 150 kids attending the play.
To find the number of kids attending the play, we need to determine the number of parts in the ratio that represent kids.
In the ratio 8:5, each part represents a group of people. Since the ratio is made up of 8 parts for adults and 5 parts for kids, the total number of parts is 8 + 5 = 13.
To find the number of kids attending the play, we need to divide the total number of people by the total number of parts in the ratio and then multiply it by the number of parts representing kids.
Number of kids = (Number of parts representing kids / Total number of parts) × Total number of people
= (5 / 13) × 390
= (5/13) × 390
≈ 150
Therefore, there are approximately 150 kids attending the play.