Answer:
30
Step-by-step explanation:
2/3 = x/18
2*18 = 3x
36 = 3x
x=12
so there are 12 boys
12+18=30
You can model this with the equation 4x+3=15 since it is a number (x) times 4 with 3 added and equals 15.
Subtract 3 from both sides
4x=12
Divide both sides by 4
x=3
Answer:
Chris evans
Step-by-step explanation:
Answer:
3.6 and 1.2
Or
-3.6 and -1.2
Step-by-step explanation:
Let x and y be the two numbers
xy = 4.32
x/y = 3
x = 3y
3y² = 4.32
y² = 1.44
y = +/- 1.2
x = +/- 3.6
