ground chuck sells for $1.75 a pound and ground round sells for $3.85 a pound. how many pounds of ground round must be mixed with eight pounds of ground chuck to obtain a mixture that will sell for $3.50 a pound
2006-09-12 08:46:29 · 8 answers · asked by ddd d 1 in Science & Mathematics ➔ Mathematics
Those answers aren't correct.
You have to set this up into an equation. Since you know that you have 8 lbs of ground chuck and the price is dollar per lb or ($/lb), then set up an equation so you can find the number of lbs needed of ground round and the total pounds needed. You will be setting this up so you can cancel out lbs and be left with $ so you have to multiply your information together.
(8 lbs * $1.75/lb) + (X * $3.85/lb) = (X + 8 lbs)($3.50/lb)
where X = number of pounds needed to be added to 8 lbs to make a $3.50 mixture. Continuing on, start working each side of the equation:
$14 + ($3.85X) = ($3.50X) + $28
Combine like terms and isolate variables:
$0.35X = $14
And solve for X:
X = 40 lbs
Notice that the units for X is lbs for the entire problem.
Practice reading problems and figuring out each part and what it means if it were to be put in an equation.
2006-09-12 09:11:06 · answer #1 · answered by Shortstuff71 3 · 1⤊ 1⤋
0.167 lbs. Ground Chuck
0.833 lbs. Ground Round
2006-09-12 15:55:20 · answer #2 · answered by Justin K 1 · 1⤊ 1⤋
.285 pound to be mix lol just guessing
well, i do it like this LOL
1 pound / 3.50 a pound = 0.285714
1 pound / 3.85 a pound = 0.259740
LOL i don't know math LOL
2006-09-12 15:55:48 · answer #3 · answered by eyerock 2 · 1⤊ 1⤋
i did one whole answer for you already, now try working on others urself, and if u really made an honest attempt but had no idea what to do, then u need to get help from ur teacher, not Answers
2006-09-12 15:55:58 · answer #4 · answered by amber 3 · 2⤊ 0⤋
let x pounds be mixed
the equation is
8(1.75)+3.85x=(x+8)*3.50
multiplying throughout by 100
1400+385x=350x+2880
transposing
35x=1480
so x=1480/35=42.3
2006-09-12 16:02:55 · answer #5 · answered by raj 7 · 1⤊ 1⤋
this isnt math
its like a riddle
2006-09-12 15:52:39 · answer #6 · answered by Anonymous · 1⤊ 0⤋
do ur own work no one is going to solve such ques. for you
2006-09-12 15:49:35 · answer #7 · answered by Yogesh G 3 · 2⤊ 0⤋
Try a little harder... read your text books!
2006-09-12 15:58:37 · answer #8 · answered by m s 3 · 2⤊ 0⤋