SOLUTION: The length of a mailing label is 5 cm less than the width. The perimeter is 50 cm. What are the dimensions?

Question 262825: The length of a mailing label is 5 cm less than the width. The perimeter is 50 cm. What are the dimensions?
Answer by drk(1908) (Show Source): You can put this solution on YOUR website!
The length of a mailing label is 5 cm less than the width
translates as
(i)
we also know
(ii)
substitute (i) into (ii) to get
(iii)
distribute and simplify the right to get
(iv)
add 10 to both sides to get
(v)
divide by 4 to get
(vi)
this means the length is

the envelope is 10 x 15
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