The width of a rectangle is 30 less than 4 times the length. The perimeter is 60. What is the length, width, and area

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Step-by-step explanation:

Let x represent the length of the rectangle. Then the width is 4x-30, and the perimeter is ...

  P = 2(L +W)

  60 = 2(x +(4x -30)

  30 = 5x -30

  60 = 5x

  12 = x . . . . length

  4x -30 = 18 . . . . width

Area is the product of length and width.

  A = LW

  A = (12)(18) = 216

The length is 12, the width is 18, and the area is 216.

step-by-step explanation:

answer:

payment just for service  

→

$

87.12

payment for service including tax

→

$

94.09

explanation:

service only with 20% tip  

→

$

72.6

(

1

+

20

100

)

=

$

87.12

in the opening of the question the word 'service' is associated only with the pretax value.

the closing part of the question asks: how much did she pay for the  

service

−−−−−−  

so technically the answer is  

→

$

72.6

(

1

+

20

100

)

=

$

87.12

however, the intention of the question provider may have been that your answer is to be  

$

87.12

(

1

+

8

100

)

=

$

94.09

to 2 decimal places.

'

payment just for service  

→

$

87.12

payment for service including tax

→

$

94.09

tony b

mar 21, 2017

answer:

trying to explain it another way

explanation:

service charge  

.

→

$

72.60

20% tip  

20

100

×

$

72.60

=

$

14.52

−−−−−−  

←

add

$

87.12

tax  

8

100

×

$

87.12

=

$

6.97

−−−−−  

←

add

$

94.09

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