state gov UPPSC BEO Previous Year Paper Mock Test Quantitative Aptitude Time and Work Work Efficiency
Carpenter A makes 1 chair in 6 hours, Carpenter B makes 1 chair in 7 hours and Carpenter C makes 1 chair in 8 hours. If each Carpenter works 8 hours per day, how many chairs will be made in 21 days?
1
64
2
69
3
73
4
78