Can someone please help me ?

340 total people (see below)

Step-by-step explanation:

So first, you need to find the number of children. To do that, the percentage of adults must be 55% because is 45% of 100% are children, the remaining are adults. You can use a ratio to find the amount of children:

x children  =  45%

187 adults     55%

Now, cross multiply:

55x = 187 (45)

55x = 8415

x = 8415/55

x = 153

There are 153 children.

To find the total amount of people in the theater, add the two amounts:

187 adults + 153 children = ? people

                                           = 340 people

3 1/3 −(5 1/2 x−2 1/6 )+8 5/9 x

Step-by-step explanation: