Assign variables to the groups. "S" stands for senior citizens and "C" stands for children.
3S + 9C = 75
8S + 5C = 67
We must cancel one of these variables out; I did this by multiplying the top equation by 8 and the bottom equation by 3.
24S + 72C = 600
24S + 15C = 201
Subtract these two expressions and you get C = 7. Plug 7 in for C into any of the above expressions and solve for S. You will find that S = 4.
16% of $36.48 is $5.84
9s
Cross multiply 16 and 36.48 to 583.68, and then I divided by 100, to get the percent of 5.8368, which I rounded up to 5.84%.
Order of operations
PEMDAS
There are no parenthesis
There are no exponents
Now, we do multiplication and division from left to right
(9x9) + 8 - (8/10)
=
81 + 8 - 0.8
Now, we do addition and subtraction from left to right
(81 + 8) - 0.8
89 - 0.8
=
88.2
2•6-2•5x would be without parentheses
Answer:
28 students would vote for kim
Step-by-step explanation:
Well first you do 12/15 which would be 0.8
Now to find how many students in that class said they would vote for Kim for class president, we multiply 0.8 by 35 to get that 28 students said they would vote for kim