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alexandr402 [8]
3 years ago
5

an item was sold at loss of 20%. had it been sold for rs3000 more then the profit would have been 10%. What is the cost price of

the item
Mathematics
1 answer:
iVinArrow [24]3 years ago
4 0

Answer:

10000

Step-by-step explanation:

Assumed that the cost price of the item is x.

It was sold at a loss of 20%:

therefore the price sold was 0.8x

If it was sold at a profit of 10%:

the price sold would have been 1.1x

Since the difference in price is 3000:

1.1x - 0.8x = 3000

0.3x = 3000

x = 10000

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Factoring expression using GCF of 84+28
Amanda [17]

Answer:

The answer to yours is incorrect the answer is 112.

Step-by-step explanation:

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I don't know how to calculate these can someone tell me step by step?
fgiga [73]
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3 years ago
2.50c+6a=6344.50 <br> Find each variable
Ksju [112]

Answer:

c=2.4a+2537.8

a=-2.5/6c+1057.4

Step-by-step explanation:

solve for c:

2.50c+6a=6344.50

          -6a         -6a

2.50c=-6a+6344.50

/2.50       /2.50      /2.50

c=2.4a+2537.8

solve for a:

2.50c+6a=6344.50

-2.5c                -2.5c

6a=-2.5c+6344.50

/6       /6       /6

a=-2.5/6c+1057.4

6 0
4 years ago
A barrel of water is full. It decreases by 85%. Now it has 120 liters of water. How much liters of water did it have to begin wi
Fed [463]

Answer:

800 liters

Step-by-step explanation:

A simple cross multipilcation

It says it has gone down 85%, so only 15% is left.

120 liters is 15% of the original sum.

120 liters      15%

x=                 100%

120*100/15 = 800 liters

7 0
3 years ago
Jamie was asked to make r the subject of the formula
aksik [14]

Answer:

Assuming the formula below, the answer is:

      r=\dfrac{12s}{12+t}

Explanation:

I can teach you how to <em>make r the subject of a formula</em>, with an example.

Other similar question asks to make r the subject of this formula:

         t=\dfrac{12(s-r)}{r}

<u>1. Apply multiplication property of the equalities: muliply both sides of the equality by r</u>

<u />

       t\times r=12(s-r)

<u>2. Apply distributive property on the right side</u>

      t\cdot r=12s-12r

<u>3. Addition property: ad 12r to both sides</u>

       t\cdot r+12r=12s

<u>4. Common factor r on the left side</u>

        r(12+t)=12s

<u>5. Division property of equalities: divide both sides by 12 + t</u>

        r=\dfrac{12s}{12+t}

6 0
4 years ago
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