a bookcase is to be construed as shown in the figure. The length is to be 3 times the height. If 60 feet of lumber is available for the entire unit, find the length and height of the bookcase. (how to start that equation).

Question

saifoo.khan · Answer

width = x
Length = x+3

Area = L * B

  60   = (x+3) * x

saifoo.khan · Answer

x^2 + 3x = 60

Solve. :)

anonymous · Answer

Length=3x
Height=x
4x=30 is your equation

anonymous · Answer

Saifoo you're completely wrong

anonymous · Answer

Thank for both of your help.

anonymous · Answer

I have one more problem that I'm confuse.: The average salaries salary for computer programmers is $7740 less than twice the average salary for carpenters. Combined, their average salaries are $99,000. Determine the average salary for each of these jobs.

anonymous · Answer

7740/2=3870
99000-3870/2=computer programmer
99000+3870/2=carpenter

anonymous · Answer

Alright, thanks Florent. :)