Answer:
x = -9
Step-by-step explanation:
-4x = -1/2(10x + 18)
Distribute
-4x= - 5x -9
Add 5x to each side
-4x+5x = -5x+5x -9
x = -9
He would need to sell rougly 15 packages per week.
An easy way to do this question is finding 40% of 120 then subtracting it from $120. This is done in a few ways, i use the unitary method:
120/100= 1% =1.2
x40 to find 40% = $48
120-48= 72
The sale price is 72
OR
multiply 120 by .6 to find the result with 40% taken away
lets use x The sum of that and 6 is 1/2 x + 6
Ten times that is 10 (1/2 x + 6)
The question says that's 8.
So 10 (1/2 x + 6) = 8
Divide each side by 10 : 1/2 x + 6 = 0.8
Subtract 6 from each side: 1/2 x = - 5.2
<span>Multiply each side by 2 : x</span><span> = - 10.4</span>
25.9272, so it's basically 25.93.
