Question
A, B, and C are working together on a project. A can
complete the project alone in 15 days, B in 20 days, and C in 30 days. On the first day, A, B, and C work together. On the second day, A and B work together. On the third day, B and C work together. This pattern repeats in the same order. How many days will it take to complete the entire project?Solution
Total work = (LCM of 15 , 20 and 30) = 60 units Efficiency of A = 60/15 = 4 units/day Efficiency of B = 60/20 = 3 units/day Efficiency of C = 60/30 = 2 units/day ATQ 1st day work (A+B+C) = 4+3+2 = 9units 2ndday work (A+B) = 4+3 = 7 units 3rd day work (B+C) = 3+2 = 5 units Total work in 3 days = 9+7+5 = 21 units Total work in 6 days = 21 x 2 = 42 units Remaining work = 18units Now its turn of all three on 7thday (A,B and C) = 9units On 8th day (A and B) = 7 Remaining 2 units of work done by (B and C) = 2/5 days = 0.4 day Total time taken = 8.4 days
Statements:
All Wrappers are Wafers.
Only a few Wafers are Celebrations.
No Celebration is Party.
Conclusions:
I. All...
Conclusions:
I. All Passages can be Streets
II. Some Footpaths are RoadsÂ
Statements:
Statements: All gates are lights.
No street is a gate.
All lights are houses.
Conclusions I. All gates are houses.
II. So...
Statements:
Only a few Careers are Visions.
Some Visions are not Missions.
Some Missions are not Ambitions.
Only a few Ambit...
Statements:
Only plateau is mountain
Only a few plateau is river
Few river is hill
Conclusions:
I. Some mountain are ...
Read the given statements and conclusions carefully. Assuming that the information given in the statements is true, even if it appears to be at varianc...
Statements:
All signals are mobile.
Some mobile are expensive.
All expensive are rare.
Conclusion:
I. Some expens...
Read the given statements and conclusions carefully. Assuming that the information given in the statements is true, even if it appears to be at varianc...
In the question below there are three statements followed by two conclusions I and II. You have to take the three given statements to be true even if t...
Statements: All cans are vessels.
Some vessels are jars.
All jars are containers.
Some container...