82. Dora bought one package of each 1-pound pork, 2-pound pork and 4-pound pork.
Thus, she got a total of:
=> 1 pound + 2 pounds + 4 pounds = 7 pounds of pork.
Question: How many ¼ pound of hamburger she can make then with this given number of pork in pounds.
=> ¼ = 1 / 4 = .25
Now, let’s divide 7 pounds by .25 pounds
=> 7 / .25 = 28
Thus, She can make 28 hamburgers in all.
Given: Different statement
To Determine: Which of the statement would give a valid conclusion
Solution
Please note that the statement must be a true representation of the population
X + y = 1.....multiply by -2
2x - 3y = -30
-----------------
-2x - 2y = -2 (result of multiplying by -2)
2x - 3y = -30
----------------add
-5y = -32
y = -32/-5
y = 32/5 or 6.4 <===
The percentage of the markup was 60%.
<span>Simplifying
5(6 + -4x) = 25
(6 * 5 + -4x * 5) = 25
(30 + -20x) = 25
Solving
30 + -20x = 25
Solving for variable 'x'.
Move all terms containing x to the left, all other terms to the right.
Add '-30' to each side of the equation.
30 + -30 + -20x = 25 + -30
Combine like terms: 30 + -30 = 0
0 + -20x = 25 + -30
-20x = 25 + -30
Combine like terms: 25 + -30 = -5
-20x = -5
Divide each side by '-20'.
x = 0.25</span>
