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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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Match the term with its beliefs about the millenium.
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c is amillenialism

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To record the bad debt expense for the period and bring the allowance to $4,300 credit balance.

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Allowance for doubtful     0          $960        $1,360         $900        $1,080

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