The perimeter of a rectangular garden is

1 answer:

7 0

Since the length is 96 ft., there are two sides of that length, so 96x2=192. Now subtract that from 338. 338-192=146. Divide that by two, since there are still two sides left. 146/2=73. The width is 73 ft.

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lianna [129]

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3 years ago

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Firlakuza [10]

Answer:

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2 years ago

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a_sh-v [17]

Let the three apartments be A, B & C

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The rent of B is $y

The rent of C is $z

So x + y + z = 1600 .......(1)

Now

Maintenance of A is 20% of x = 0.20x

Maintenance of B is 20% of y = 0.20y

Maintenance of C is 25% of z = 0.25z

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Multiplying by 100 we get

20x + 20y + 25 z = 34500

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4x + 4y + 5z = 6900 .......(2)

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Monthly fee of B is 20% of y = 0.20 y

Monthly Fee of C is 10% of z = 0.10z

Now

0.10x + 0.20y + 0.10 z= 1820 - 1600

0.10x + 0.20y + 0.10z = 220

Multiplying by 100 we get

10x + 20y + 10z = 22000

Dividing by 10

x + 2y + z = 2200 ....(3)

Making a Matrix of equation (1), (2) & (3)

$\left[\begin{array}{ccc}1&1&1\\4&4&5\\1&2&1\end{array}\right] \left[\begin{array}{c}x\\y\\z\end{array}\right] =\left[\begin{array}{c}1600\\6900\\2200\end{array}\right]$