MATHEMATICS MIDDLE SCHOOL

Last month, he sold 50 chickens and 30 ducks for $550. This month, he sold 44 chickens and 3636 ducks for $532. How much does a chicken cost, and how much does a duck cost?

Answers

Answer 1
Answer:

Answer:

chickens cost $8

ducks cost $5

Step-by-step explanation:

c= chicken cost

d =duck cost

50c + 30 d = 550

44c + 36d = 532


divide the first equation by 10

5c + 3d = 55

multiply it by -12

-60c -36c = -660

now add the modified first equation to the second equation

-60c -36c = -660

44c + 36d = 532

-------------------------

-16c    = -128

divide by -16

c = 8

a chicken costs $8

now lets find d

5c+3d = 55

5*8 + 3d = 55

40 + 3d = 55

subtract 40 from each side

3d = 15

divide by 3

d = 5

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Find the sp. If a profit of 5% is made on a lawn mower bought at rs. 12,600 with rs.450 as transportation charges.

Answers

The selling price is rs. 13,702.5

Step-by-step explanation:

The formula of the profit is ⇒ profit = selling price - cost price

  • A lawn mower bought at rs. 12,600
  • There is rs.450 as transportation charges
  • The profit on it is 5%

We need to find its selling price

∵ A lawn mower bought at rs. 12,600

∵ There is rs. 450 as transportation charges

- The find the total cost of it add the buying price and the

   transportation charges

∴ The total cost of the lawn mower = 12600 + 450

∴ The total cost of the lawn mower is rs. 13050

∵ The profit on it is 5%

∴ The profit = 5% of the cost price

∴ The profit = 5% × 13050 = (5)/(100) × 13050

∴ The profit = 652.5

∴ The profit is rs. 652.5

∵ profit = selling price - cost price

- Substitute the values of the profit and the cost price in the

  formula above

∴ 652.5 = selling price - 13050

- Add 13050 to both sides

∴ 13702.5 = selling price

∴ The selling price is rs. 13702.5

The selling price is rs. 13,702.5

Learn more:

You can learn more about the profit in brainly.com/question/11145277

#LearnwithBrainly

This is hard, but I really need help!A triangle has two given sides, one is 5 in and the other is 10 in. What would the third side have to be for the triangle to be an:

1.) acute triangle
2.) obtuse triangle

Please comment if you have any questions! Thanks :)

Answers

Please see pic, I'd solved in it.

SOMEONE HELP PLZ < EMRGENCY. 7 POOUNTS TO THE FIRST ONE TO ANSWER

Answers

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