A and B possess books in the ratio of 3 : 4. B and C possess them in the ratio 2 : 3. If C gives 20 books to A, then A, B and C possess books in the ratio 4 : 4 : 5. Find how many books A, B and C originally had?
1
30, 40, 60
2
60, 80, 100
3
60, 80, 120
4
40, 40, 50