B is thrice as efficient as A and C is 0.75 times as efficient as A. What is the ratio of number of days taken by A, B and C when they work individually?
1
4 : 1 : 3
2
3 : 1 : 4
3
2 : 3 : 1
4
5 : 1 : 2
B is thrice as efficient as A and C is 0.75 times as efficient as A. What is the ratio of number of days taken by A, B and C when they work individually?