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n200080 [17]
3 years ago
9

The pharmacist needs to measure out 35 grams of a 70% powder using the 50% and 90% powders he has in stock. how much of each pow

der is required?
Business
2 answers:
aleksandrvk [35]3 years ago
4 0
The pharmacist needs to measure out 17.5 grams of the 50% powder and 17.5 grams of the 90% powder and should end up with 35 grams of the 70% powder thus making for an easy method of calculation for mixing the two powders.
dedylja [7]3 years ago
4 0

let us say that:

x = mass of 50% powder

y = mass of 90% powder

 

eqtn 1 overall mass balance: x + y = 35

eqtn 2 poweder balance: 0.50 x + 0.90 y = 0.70 * 35 => 0.50 x + 0.90 y = 24.5

 

Combining equations 1 and 2:

0.50 (35 – y) + 0.90 y = 24.5

17.5 – 0.50 y + 0.90 y = 24.5

0.40 y = 7

y = 17.5 grams

 

x = 35 – y = 35 – 17.5 = 17.5 grams

 

<span>So equal amounts of 17.5 grams each are needed.</span>

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The purpose of the Digital Millennium Copyright Act is to improve protection of copyrighted digital products.

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2 years ago
Anne, a beautician by profession, owns a salon in the small town of franklin, new jersey. every weekend, she makes it a point to
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Anne is conducting market research by doing a competitive analysis.

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6 0
3 years ago
Your godmother put $2,000 in a trust fund for you. In 10 years the fund will be worth $5,000. What is the rate of return on the
damaskus [11]

Your godmother put $2,000 in a trust fund for you. In 10 years the fund will be worth $5,000. 9.60% is the rate of return on the trust fund.

FV =  Future Value

PV =  Present Value

r =  rate of interest

n=  no of period

   

FV/ PV =  (1 + r )^n

5000/2000   =  (1 + r%)^10

2.5 = (1 + r%)^10

r = 9.60%.

The rate of return is the net profit or loss of an investment over a period of time, expressed as a percentage of the original cost of the investment. 1 When calculating the rate of return, find the percentage change from the beginning of the period to the end of the period.

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7 0
2 years ago
Data concerning Pellegren Corporation's single product appear below: Fixed expenses are $531,000 per month. The company is curre
GrogVix [38]

Answer:

a. decrease of $18,000

Explanation:

The calculation of overall effect on the company's monthly net operating income is shown below:-

<u>Particulars          Current                  Proposed </u>

Sales               $800,000                 $837,000

                     ($200 × 4,000) (200 - 14) × (4,000 + 500)

Variable

expenses          $160,000               $180,000

                     (40 × 4,000)              (40 × (4,000 + 500))

Contribution

margin              $640,000                $657,000

Fixed

expenses           $531,000                 $566,000

                                               ($531,000 + 350,00)

Net operating

income                  $109,000              $91,000

Decrease in net operating income is

= $109,000 - $91000

= $18,000

6 0
3 years ago
Joe sold gold coins for $1,000 that he bought a year ago for $1,000. He says, "At least I didn't lose any money on my financial
sergejj [24]

Answer:

B) opportunity costs.

Explanation:

Opportunity cost is the fortified benefits when a choice is made. It is the sacrificed option from a  variety of possible choices. The value of opportunity cost is expressed as the cost of the next best alternative.

According to the economist, Joe made a loss because his opportunity cost would have yielded a better return. In evaluating the viability of a project, economists always consider the returns from the next best alternative. Joe would have made a profit if the returns from the sales of gold were higher than the 3 percent from a certificate of deposit.  Because Joe opted for the gold, he missed the chance to earn from the certificate of deposit. In economics, he made a loss.

3 0
2 years ago
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