mathematics word problems
posted by Epson on .
Club members wrote a program together, with several people working on each of 4 parts. If the first part of the program required 1/3 of the total time, the second part needed 1/2 of the remaining time, the third part took 30 minutes, and the fourth part took 60 minutes, how many hours did the program take to write?

1/3x + 1/2x + 30 + 60 = x
Change fractions to common denominator and solve for x.