Answer:
24 bags can be made from three 5 pounds bags.
Step-by-step explanation:
Given that:
Three 5 pound bags are donated.
Total weight of bags = 3*5 = 15 pounds
We know that:
1 pound = 16 ounces
15 pounds = 16*15 = 240 ounces
A bag weighs 10 ounces.
Number of bags = 
Number of bags = 24 bags
Hence,
24 bags can be made from three 5 pounds bags.
Let's say that the shorter piece is x and the longer piece is 5x (because it's 5 times as long). x+5x=72 and 6x=72. Dividing both sides by 6, we get that x=12, and 72-12=the length of the other piece (since there are only 2 pieces)=60
<span>We simplify the equation to the form, which is simple to understand
<span>7x-1/2(8x+4)=6
</span></span><span>Simplifying:
<span>7x-0.5*(8x+4)=6
</span></span><span>Reorder the terms
<span>7x+(-4x-2)=6
</span></span><span>Remove unnecessary parentheses
<span>+7x-4x-2=+6
</span></span><span>We move all terms containing x to the left and all other terms to the right.
<span>+7x-4x=+6+2
We simplify left and right side of the equation.
<span>+3x=+8
We divide both sides of the equation by 3 to get x.
<span>x=2.66666666667</span></span></span></span>
