engineering recuitment DDA JE Civil 2023 Mock Test Quantitative Aptitude Time and Work Work Efficiency
A, B and C can do a work in 5 days,6 days and 10 days, respectively. Working together, in how many days will they finish the same work?
1
\(2{{1} \over 7}\)
2
\(4{{1} \over 7}\)
3
\(3{{1} \over 7}\)
4
\(1{{1} \over 7}\)