Answer:
218 adults and 104 children attended.
Step-by-step explanation:
From the information given, you can write the following equations:
x+y=322 (1)
8.75x+6y=2531.50 (2), where:
x is the number of adults
y is the number of children
First, you can solve for x in (1):
x=322-y (3)
Then, you can replace (3) in (2) and solve for y:
8.75(322-y)+6y=2531.50
2817.5-8.75y+6y=2531.50
2817.5-2531.50=8.75y-6y
286=2.75y
y=286/2.75
y=104
Finally, you can replace the value of y in (3) to find x:
x=322-104
x=218
According to this, the answer is that 218 adults and 104 children attended.
Answer:
n=150
Step-by-step explanation:
(-17+n/5)-13=0
-17= -17/1 = -17(5)/5
-17(5)+n/5 = n-85/5
(n-85)/5-13=0
13=13/1 =13(5)/5
(n-85)-(13(5))/5 =n-150/5
(n-150)/5=0
n-150=0
n=150
He is left with 
minutes for the last problem
Step-by-step explanation:
Given
Total time = 30 minutes
Time spent on problem 1: 
minutes
Time spent on problem 2: 
minutes
First of all, we will calculate the total time for 2 problems
The remaining time is:
Hence,
He is left with minutes for the last problem
Keywords: Fractions, mixed fractions
Learn more about fractions at:
#LearnwithBrainly
Answer:
4
Step-by-step explanation:
21x because when a number (7) is right beside a number in parentheses it means that the number in the parentheses is being multiplied by the number next to the parentheses and then at the end when you get the answer you just put the x beside the answer.
