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77julia77 [94]
3 years ago
11

If you measure a tds of 1.4%, and you used a brew ratio of 15, what is the percent extraction?

Mathematics
1 answer:
sweet-ann [11.9K]3 years ago
4 0
Answer: the extraction is 18.2%.

Explanation:

Let's see few definitions:
TDS = Total Dissolved Solids = solids dissolved in the brew
PE = Percent Extraction = percent of solids extracted from the dry coffee grounds

The percent extraction can be calculated by the formula:
PE = TDS × Rm

where
Rm = ratio between the mass of the brew and the mass of dry grounds

Now, you need to consider the following facts:
1) every 1g of coffee absorbs 2g of water
2) the given brew ratio is 1:15, which means that for every 1g of grounds we use 15g of water

Let's call
x = grams of coffee grounds we want to use
Therefore the mass of the brew will be: 
m(brew) = water we use - water absorbed by the coffee
              = 15·x - 2·x
              = 13·x

Therefore,
Rm = m(brew) / x
       = 13·x / x
       = 13

Hence, the percent of extraction will be:
PE = <span> TDS × Rm
      = 1.4 </span>× 13
      = 18.2
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3 years ago
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3 0
3 years ago
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I need help is it A B C or D
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4 0
3 years ago
a square dance set requires 4 couples 8 dancers with each couple standing on one side of a square. There are 250 people at a squ
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Given:

1 set requires 4 couples 8 dancers.

Total number of people at a square dance = 250.

To find:

The greatest number of sets possible at the dance.

Solution:

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\text{Number of possible sets}=\dfrac{\text{Total people}}{\text{People required for 1 set}}

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\text{Number of possible sets}=31.25

Number of possible sets cannot be a decimal or fraction value. So, approx. the value to the preceding integer.

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7 0
2 years ago
The perimeter of a rectangular field is 60 meters. Its area is 200 square meters. Find its dimensions.
Vanyuwa [196]

Answer:

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Step-by-step explanation:

let w be width and l be length , then

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l = 30 - w → (1)

lw = 200 → (2)

Substitute l = 30 - w into (2)

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Equate each factor to zero and solve for w

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4 0
2 years ago
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