SOLUTION: A leather coin purse has the shape of a triangle. Two sides are equal in lenght and the third side is 3 centimeters shorter than one and one-half times the length of the equal side

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Question 366799: A leather coin purse has the shape of a triangle. Two sides are equal in lenght and the third side is 3 centimeters shorter than one and one-half times the length of the equal sides. The perimeter is 28.5 centimeters. Find the lengths of the sides.
Answer by mananth(16946) About Me  (Show Source):
You can put this solution on YOUR website!
let the equal sides be x cm
the third side
1 1/2 times the equal side = 3x/2
3 cm short
3x/2 -3 will be the third side.
...
x+x+3x/2-3=28.5
7x/2 -3 = 28.5
7x/2 = 28.5 +3
7x/2= 31.5
multiply by 2
7x = 63
/7
x= 9
x=9 which is the equal side
third side = 9*3/2 - 3
=27/2-3
=13.5 -3
=10.5 is the third side
...
CHECK
9+9+10.5
m.ananth@hotmail.ca