
Chaoyun L. answered 11/23/15
Tutor
1
(1)
Master of Math with concentration in Statistics
Let the work book has x pages, then the text book has 6x+25 pages.
x+6x+25 =305
7x=280
x=40
6x+25 =6*40+25 = 265
so work book has 40 pages and text book has 265 pages.