SOLUTION: the base of an isoscles triangle is one-third the length of each equal side. If the perimeter is 105cm, Find the length of the base and each side. i know the answer is base is 1

Question 902654: the base of an isoscles triangle is one-third the length of each equal side. If the perimeter is 105cm, Find the length of the base and each side.
i know the answer is base is 15cm and each side is 45cm but how did they get those numbers with the information given? please help
Answer by ewatrrr(24785) (Show Source): You can put this solution on YOUR website!
s + s + s/3 = 105cm |Multiplying thru by 3 so as all denominators = 1
3s + 3s + s = 315cm
7s = 315cm
s = 45cm
and
b = 15cm
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