Answer:
190 children and 150 adults
Step-by-step explanation:
1. 1.25x + 2y = 537.5
2. x + y = 340
Here, x represents the children and y represents the adults.
Again, the first equation represent the cost of tickets, while the second represents the number of people.
From the above equation, we can solve for x and y
From equation 2,
x + y = 340
x = 340 - y
Substitute for x in equation 1
1.25x + 2y = 537.5
Then,
1.25(340 - y) + 2y = 537.5
Expand the bracket
425 - 1.25y + 2y = 537.5
Collect like terms
-1.25y + 2y = 537.5 - 425
0.75y = 112.5
y = 150.
To get the value of x, substitute for y in equation 2
x + y = 340
x + 150 = 340
x = 340 - 150
x = 190
Therefore,
There were 190 children and 150 adults at the pool that day
To solve the inequality, you isolate the variable on one side using transformations that produce equivalent inequalities, which have the same solution(s). Solve x+5≥3. Graph the solution. The solution is all real numbers greater than or equal to -2.
The mixed number for 128.34 is 128 17/50
Yes. But only the volume. The volume could very well add to the cost of the packaging.
7*(x - 7) = 126 <=>
x - 7 = 18 <=>
x = 25