Problema Solution

a bookcase is to be constructed. the length is 3 times the height. if 60 feet of lumber is available for the entire unit find the length and height of the bookcase

Answer provided by our tutors

Let the Height be the Width.

A rectangular book case, where P=2L + 2W

Given:

P=60ft

L=3*W

H=W

W=7.5ft=Height

Also, L=3*7.5=22.50ft=L 

Check, P=2*22.5 + 2*7.5 = 45+ 15 = 60ft