SOLUTION: Hello, I am a parent needing help in giving my child help in pre algebra. Could you give me help so I can help explin and guide them to the answer. Thank you in advance. Here is

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Question 131415This question is from textbook impact mathmatics
: Hello, I am a parent needing help in giving my child help in pre algebra. Could you give me help so I can help explin and guide them to the answer. Thank you in advance. Here is the question:
Problem set B question 5
A rectangular field is three times as long as it is wide. The fence around the field's perimeter is 800 meters long. How wide is the field?
I have got that the ends are 100 and the sides are 300, how do I get it in expression formate? This question is from textbook impact mathmatics

Answer by TakeATuition.com(57) About Me  (Show Source):
You can put this solution on YOUR website!
SOLUTION -

Let the breadth be x

Therefore the length is 3x (as length is three times its breadth)
Now perimeter is given = 800

perimeter = 2(LENGTH+BREADTH)

2(3X+X) = 800

2(4X) = 800

8X = 800

8x/8 = 800/8

x = 100
Now length = 3x = 3*100 = 300
breadth = x = 100
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