1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Aliun [14]
3 years ago
12

Three varieties of coffee long dash— Coffee​ A, Coffee​ B, and Coffee C long dash— are combined and​ roasted, yielding a 51​-lb

batch of coffee beans. Twice as many pounds of Coffee​ C, which retails for ​$9.95 per​ lb, are needed as Coffee​ A, which sells for ​$15.99 per lb. Coffee B retails for ​$13.21 per lb. How many pounds of each coffee should be used in a blend that sells for ​$12.82 per​ lb?
Mathematics
1 answer:
asambeis [7]3 years ago
8 0
Let A, B and C be the number of pounds of each brand of coffee.
A+B+C=51 (weight) which is 3A+B=51 because C=2A, B=51-3A
15.99A+13.21B+19.90A=51×12.82=653.82 (cost) I’ve used C=2A
35.89A+13.21B=653.82
Substitute for B:
35.89A+13.21(51-3A)=653.82
35.89A+673.71-39.63A=653.82
3.74A=19.89, A=117/22 pounds, B=771/22 pounds, C=117/11 pounds.
Approximate weights are A: 5.32lb, B: 35.05lb, C: 10.64lb.
You might be interested in
Simplify the expression -3 devided by -2/5. A. -7 1/2 B. -1 1/5 C. 1 1/5 D. 7 1/2
Llana [10]

Answer:

D. 7 1/2

Step-by-step explanation:

-3 divided by -2/5

-(-3(-5/2)

-(-3 x 5/2)

-15/2

7 1/2

Hope it helps

7 0
3 years ago
Alonzo works as a tutor for $7 an hour and as a waiter for $8 an hour this month he worked a combined total dollar total dollar
docker41 [41]

Answer: -1t + 720

Step-by-step explanation:

He worked at both jobs for 90 hours for this month.

He worked t hours as a tutor which means that as a waiter he worked;

= 90 - t hours

The amount earned is therefore;

= 7t + (8 * (90 - t))

= 7t + 720 - 8t

= -1t + 720

6 0
3 years ago
You are given the difference of the numbers of boys and girls in a class and the ratio of boys to girls. How many boys and how m
Tema [17]

Answer:

Am sure boys are 13and girls also 13

7 0
2 years ago
Jillian wants to download a new ringtone to her cell phone. There are 954 music tones, 158 voice tones, and 63 sound effects to
guapka [62]

Answer:

B

Step-by-step explanation:

Just take all three numbers (954, 158, 63) then add them all up.

3 0
2 years ago
Name the quadrilateral
Aliun [14]

Answer:

Trapezoid

Step-by-step explanation:

4 0
2 years ago
Other questions:
  • Find the extra circumference of a circle with the given radius 5 inches c=
    11·1 answer
  • Use the distributive property to remove the parentheses, simplify.
    6·2 answers
  • If x+a is a factor of 2x²+2ax+5x+10,find a.
    8·1 answer
  • Roni's parents are planning a vacation. They found a cabin to rent for $75 a day with no deposit. They also found a hotel that w
    7·1 answer
  • Part one: Sequence and Series
    15·1 answer
  • In △ABC, AB = 13.2m, BC = 6.9m and ∠ACB = 90°. H lies on AC such that ∠BHC = 46°. Find (i) ∠ABH (ii) The length of AH
    7·1 answer
  • AB=A, B, equals Round your answer to the nearest hundredth.
    10·1 answer
  • PLEASE HELP ME FAST!!!
    12·2 answers
  • Given the points (8,9) and (2,7) find the slope M=
    10·1 answer
  • I need help with −3/2​÷7​/4= please
    15·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!