Answer:
461 adults and 864 students
Step-by-step explanation:
We can set-up a system of equations to find the number of adults. We know students and adults attended. We will let s be the number of students and a be the number of adults. Since 1,325 tickets were purchased, then s+a=1325.
We also know that a total of $3,169 was collected and adult tickets cost $5 each and students cost $1 each. We can write 1s+5a=3169.
We will solve by substituting one equation into the other. We first solve the first equation for s which is s=1325-a. Substitute s=1325-a into 1s+5a=3169. Simplify and isolate the variable a.
1(1325-a)+5a=3169
1325-a+5a=3169
1325+4a=3169
1325-1325+4a=3169-1325
4a=1844
a=461
This means that 461 adults attended and 864 students attended since 864+461=1325.
According to the information provided by the graph, it can be inferred that in town A there is a lower percentage (20%) than the national percentage of bicycles with off-road wheels, while in town B the percentage is higher (45%).
<h3>How to calculate the percentage of bicycles with off road wheels in each town?</h3>
To calculate the percentage of bicycles with off-road wheels in each town, we must perform the following mathematical operation.
First we must add the number of bicycles of each type to know the total number of bicycles in the town:
- Town A: 3 + 12 = 15 bikes
- Town B: 9 + 11 = 20 bikes
Now we must calculate what percentage is equivalent to 3 bicycles with off-road wheels from town A and what percentage is equivalent to 9 bicycles with off-road wheels from town B.
15 ÷ 100 = 0.15
0.15 × 20 = 3
So, 3 bicycles with off-road wheels from town A are equivalent to 20% of the total number of bicycles.
- 20 ÷ 100 = 0.2
- 0.2 × 45% = 9
Then the 9 bicycles with off-road wheels in town B are equivalent to 45% of the total number of bicycles.
According to the above, 20% of the bicycles in town A have off-road wheels, while 45% of the bicycles in town B have off-road wheels.
Note: This question is incomplete because there are some missing information. Here is the missing information.
Learn more about percentage in: brainly.com/question/8011401
1/2 t-4(2+t)=20
1/2 t-8-4t=20
least common multiple=2
t-16-8t=40
-7t=40+16
-7t=56
t=56/-7=-8
Answer: t=-8
To check
-8/2 - 4(2-8)=-4-4(-6)=-4+24=20
ANSWER:
Total marbles =56
Number of groups =8
Therefore number of marbles in each group =56/8
= 7 marbles in each group.
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