TCS
Company
Numerical Ability
Time and Work
Jake can paint a house in 20 days. Paul can paint the same house in 15 days. Jake, Paul and Harry together paint in 5 days. Harry alone can paint the house in
1)24 days 2)18 days 3)20 days 4)12 days
Read Solution (Total 4)
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- Lcm of 20,15,5 is 60
Hence efficient of jake =60/20=3 units/day
Paul=60/15=4 units/day
Jake+paul+harry=60/5=12units per day
We get harry's efficiency =12-(4+3)=5
Therefore harry can complete in 60/5=12 days - 3 years agoHelpfull: Yes(4) No(0)
- let total work is 1.
1/20+1/15+H=1/5
H=1/12
12days - 2 years agoHelpfull: Yes(2) No(0)
- option 4) 12 days
- 3 years agoHelpfull: Yes(1) No(0)
- jake 1 day work=1/15
paul i day work =1/20
jake+paul+harry 1 day work=1/5
1/15+1/20+harry=1/5
harry=1/12
harry work id 12 days - 3 years agoHelpfull: Yes(0) No(0)
TCS Other Question
When 100 is to be successively divided by 6, 3, 4, first divide 100 by 6. Then divide the quotient 16 by 3. Then divide the quotient 5 by 4. A number when successively divided by 5, 3, 2 gives the remainder of 0, 2 and 1 respectively in that order. What will be the remainders when the same number is divided successively by 2, 3 and 5 in that order?
1) 1, 0, 4 2) 4, 3, 2 3) 4, 1, 2 4) 2, 1, 3
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