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svetlana [45]
3 years ago
12

(8 x 10^ -4) x (7.2 x 10 ^5)

Mathematics
1 answer:
antoniya [11.8K]3 years ago
3 0

Answer:

576

Step-by-step explanation:

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9. An article was sold at a profit of 12%. Had it been sold for Nu 80 more, there would be a profit of
Kamila [148]

Answer:

<em>The cost price of the article was Nu 1,000</em>

<em>The original selling price was Nu 1,120</em>

<em>The second selling price was Nu 1,200</em>

Step-by-step explanation:

<u>System of Equations</u>

Let's call:

x = Original selling price of the article

y = Cost of the article

The first condition implies that the difference between the selling price and the cost price (the profit) is 12%. Recall the profit % is always calculated with respect to the cost, that is, the profit at the first condition is:

0.12y = Original profit

Setting up the equation, we have:

x-y=0.12y

The second condition states the selling price is 80 Nu more than before, that is:

x+80= Second selling price of the article

y = Cost of the article (it doesn't change)

The profit of this condition is 20%, thus:

0.2y = Second profit

This produces a second equation:

x+80-y=0.2y

Let's put both equations together to form a system of equations:

x-y=0.12y

x+80-y=0.2y

Operating on both equations:

x=1.12y

x=1.2y-80

Equating both equations, we have an equation with only y's:

1.12y=1.2y-80

Subtracting 1.2y on each side:

1.12y-1.2y=-80

Operating:

-0.08y=-80

Solving:

\displaystyle y=\frac{-80}{-0.08}=1,000

a)

The cost price of the article was Nu 1,000

b) The selling price of the article will be calculated in both cases:

Original selling price: x=1.12y= 1.12*1000=1,120

The original selling price was Nu 1,120

The second selling price was x+80=1,200

The second selling price was Nu 1,200

8 0
3 years ago
1 point<br> Carrying a dollar in your pocket is an example of which<br> characteristic of money? *
Molodets [167]

Answer:

Store of value

Step-by-step explanation:

Look it up

8 0
3 years ago
A rectangle measures 4 1/2 inches by 2 3/4 inches what is its area?
Lelu [443]

Answer:

12.375

Step-by-step explanation:

Length x Width

 L x W

4.5*2.75 = 12.375

3 0
2 years ago
Read 2 more answers
Mandy has 8 ounces of fish food to feed her fish . she feeds the fish 0.4 of fish food at each feeding how many times can Mandy
sergejj [24]
20 times

This is just simple division. Do 8 divided by 0.4 and you should get 20

Hope this helps!
-Coconut;)
8 0
2 years ago
The average price for a gallon of gasoline in the United States is $3.73 and in Russia it is $3.40 (Bloomberg Businessweek, Marc
Brut [27]

Answer:

b. what percentage of the gas stations in Russia charge less than $3,50 per gallon im not sure though

Step-by-step explanation:

5 0
3 years ago
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