<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 = 
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>
Answer:
27 inches
Step-by-step explanation:
We can use a ratio to solve
10 15
---- = ----
18 x
Using cross products
10x = 15*18
10x=270
Divide each side by 10
10x/10 = 270/10
x = 27
Answer:
y - 5 = 3(x - 2)
y - 5 = 3x - 6
y = 3x - 1
Second Option.
Step-by-step explanation:
1,950 seconds should be the answer