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erica [24]
3 years ago
5

A boy bought an article for £9. He spent £4

Mathematics
1 answer:
Marina86 [1]3 years ago
4 0

Answer:

Profit % = 39%

Step-by-step explanation:

Cost price of the article = 9

Price for repairing = 4

Therefore, Total cost of the article = 9 + 4 = 13

Selling price  of the article = 18

Profit = 18 - 13 = 5

Hence,

          Profit \% = \frac{Profit}{Cost \ price} \times 100\\\\

                        = \frac{5}{13} \times 100\\\\=38.46 \%\\\\=38.5 \%

Profit percent (to the nearest %) = 39%

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<u>Step-by-step explanation:</u>

<u>a) The given equation is  2x + 16 = 5x + 4 </u>

  • From the above equation, it can be found that the equation consists of x terms and constant terms.
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The solution for the given equation is x=4.

<u>To check, substitute x=4 in the equation :</u>

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Therefore, the solution x=4 satisfies the equation 2x + 16 = 5x + 4

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<u>b) The given equation is 3x − 5 = 2x + 14</u>

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The solution for the given equation is x=19.

<u>To check, substitute x=19 in the equation :</u>

3(19) - 5 = 2(19) + 14

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<u>c) The given equation is 5x − 5 = x + 15</u>

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The solution for the given equation is x=5.

<u>To check, substitute x=5 in the equation :</u>

5(5) - 5 = 5 + 15

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