Atotal of
440
tickets were sold for the school play. they were either adult tickets or student tickets. the number of student tickets sold was three times the number of adult tickets sold. how many adult tickets were sold

The answer is 110 adult tickets. Let x= student tickets and y= adult tickets. 

We know that the total tickets sold was 440. That means the total number of student tickets (x) plus the total number of adult tickets (y) equaled 440. Putting it into an equation, you get:

x+y=440

Now we know that the amount of student tickets is equal to three times as many adult tickets, so in an equation that is seen as:

x=3y

In order to solve for one variable, plug in 3y for the x value of the first equation to get:

y+3y=440

then solve:

4y=440
y= 440/4
y=110

The total number of adult tickets sold was 110 tickets. 
(This method used in math is technically called "Solving Systems of Equations", just fyi).

Okay so it will be 1123

If you divide 0.1 and 0.6 you wii get 0.166666 which rounds to .167 which is answer b