engineering recuitment FCI JE 2022 Mock Test for CE/ME/EE (Phase I & II) Quantitative Aptitude Time and Work Work Efficiency
A and B can do a piece of work in 12 days. B and C can do it in 15 days while C and A can do it in 20 days. In how long will they complete it cooperating?
1
25
2
10
3
30
4
20
5
26