state gov BSPHCL Correspondence Clerk & Store Assistant Mock Test 2024 Quantitative Aptitude Time and Work Work Efficiency
A, B and C can complete a certain work in 30 days, 45 days and 60 days, respectively. If A works alone on day one and A, B and C work together on day 2 and so on, in how many days will the work be completed?
1
\(20 \frac{7}{9}\)
2
\(19 \frac{2}{19}\)
3
\(19 \frac{3}{13}\)
4
\(20 \frac{4}{15}\)