Teaching BPSC बिहार माध्यमिक TGT (9 to 10) शिक्षक भर्ती 4.0 Mock Test Quantitative Aptitude Time and Work Work Efficiency
A man, a woman and a boy can do a piece of work in 6, 9 and 18 days, respectively. How many boys should assist one man and one woman to do the work in one day ?
1
13
2
15
3
11
4
More than one of the above
5
None of the above