mariannu
6 oz of Pranav's Premium Coffee Blend was made by combining 2 oz of Arabica coffee beans which cost $12/oz with 4 oz of robusta coffee beans which cost $9/oz. Find the cost per oz of the mixture. SHow me how to do this so I will know how to do the other problems.
Delete
Share
This Question is Closed
mariannu
Best Response
You've already chosen the best response.
0
I will gladly appreciate if you help. Thank you very much.
timo86m
Best Response
You've already chosen the best response.
1
$12 oz * 2= arabica
$9 oz *4 = robusta
arabica + robusta = pranav
just plug in the w
($12 oz * 2)+($9 oz *4 )= pranav
mariannu
Best Response
You've already chosen the best response.
0
hmmm my teacher uses the box and then he plugs it in like that. XD Do you know how to use the rectangular box version?
mariannu
Best Response
You've already chosen the best response.
0
|dw:1363159124065:dw|
mariannu
Best Response
You've already chosen the best response.
0
He plugs in the numbers in there and then he puts it into that equation you wrote.
mariannu
Best Response
You've already chosen the best response.
0
|dw:1363159165717:dw|
mariannu
Best Response
You've already chosen the best response.
0
C stands for cost /concentration and A is for amount
timo86m
Best Response
You've already chosen the best response.
1
|dw:1363159234819:dw|
x can equal c*a
which is cost
mariannu
Best Response
You've already chosen the best response.
0
I just want to know how you can plug in the box and transferring it into that equation. XD
I forgot to add more detail to the drawing XD
timo86m
Best Response
You've already chosen the best response.
1
|dw:1363159271478:dw|
mariannu
Best Response
You've already chosen the best response.
0
How do you know which box to plug in the numbers? Like which number goes to which box square?
timo86m
Best Response
You've already chosen the best response.
1
maybe i am just guessing but you dont need the box
the box is just a visual aid.
mariannu
Best Response
You've already chosen the best response.
0
|dw:1363159386553:dw|
mariannu
Best Response
You've already chosen the best response.
0
wel lI am more of a visual learner. :P XD
timo86m
Best Response
You've already chosen the best response.
1
|dw:1363159532318:dw|
mariannu
Best Response
You've already chosen the best response.
0
I got 60 as well. XD But its asking the cost per oz of mixture. So is it just 60?
mariannu
Best Response
You've already chosen the best response.
0
Or 10
timo86m
Best Response
You've already chosen the best response.
1
60/6=10 :)
mariannu
Best Response
You've already chosen the best response.
0
So then I am correct. XD
timo86m
Best Response
You've already chosen the best response.
1
yes :)
mariannu
Best Response
You've already chosen the best response.
0
Why did he have to make it complicated like that . may I ask you one more question for another math problem
mariannu
Best Response
You've already chosen the best response.
0
A chemist wants to mix 12 grams of 10 percent salt solution with some 75 percent salt solution to get a 20 percent salt solution. How many grams of the 75 percent salt solution are needed? I got an answer of 2.18
mariannu
Best Response
You've already chosen the best response.
0
or 2.48
timo86m
Best Response
You've already chosen the best response.
1
idk tho not 100 sure
mariannu
Best Response
You've already chosen the best response.
0
ok then thanks though I appreciate your help ^.^ I will figure out the rest on my own by examining the review I went over with m teacher thank you.
timo86m
Best Response
You've already chosen the best response.
1
btw i am wrong on that last one
timo86m
Best Response
You've already chosen the best response.
1
2.608695652 now i get
timo86m
Best Response
You've already chosen the best response.
1
1/120+2/(4*a) = (20/100) is formula