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Numerical Ability
Time and Work
A and B together can complete a work in 15 days. A alone can complete it in 20
days. If B does the work only for half a day daily, then in how many days A and B
together will complete the work?
Read Solution (Total 2)
-
- A+B=15
A=20 then 1/A+1/B=1/15
1/20+1/B=1/15
1/B=1/60
B=60 days if he works only for half a day then he completes total work in 120 days
So, total work completed by A and B ,
1/20+1/120= (120+20)/2400
=140/240
=7/120
So ans is 120/7 days that is A and B can complete whole work in 120/7 days - 6 years agoHelpfull: Yes(2) No(0)
- 120/7 days
- 6 years agoHelpfull: Yes(0) No(0)
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