other govt exam CBSE Junior Assistant Mock Test 2025 Quantitative Aptitude Time and Work Work Efficiency
A, B and C alone can do a work in 10, 12 and 15 days respectively. All three of them began the work together but B left 3 days before completion of the work. In how many days was the work completed?
1
3 days
2
5 days
3
4 days
4
2 days