Time and Work Maths Questions for Competitive Exams

Maths Related Questions of Time and Work 

Q.6. A, B and C can complete a piece of work in 24,6 and 12 days respectively. Working together, they will complete the same work in: 

(A) 7/24 days

(B) 1/24 days

(C) 4 days

(D) 24/7 days

Q.7. There are three boats B1, B2 and B3 working together they carry 60 people in each trip. One day an early morning B1 carried 50 people in few trips alone. When it stopped carrying the passengers B2 and B3 started carrying the people together. It took a total of 10 trips to carry 300 people by B1, B2 and B3. It is known that each day on an average 300 people cross the river using only one of the 3 boats B1, B2 and B3. How many trips it would take to B1, to carry 150 passengers alone?

(A) 30

(B) 15     

(C) 10

(D) 25    

Q.8. 3 men, 4 women and 6 children can complete a work in 7 days. A woman does double the work a man does and a child does half the work a man does. How many women alone can complete this work in 7 days? 

(A) 9

(B) 6

(C) 7

(D) 5

Q.9. 12 men complete a work in 9 days. After they have worked for 6 days, 4 more men join them. How many days will they take to complete the remaining work?

(A) 2.5 days

(B) 2 days            

(C) 3 days

(D) 2.25 days      

Q.10. A group of workers was put on a job. From the second day onwards, one worker was withdrawn each day. The job was finished when the last worker was withdrawn. Had no worker been withdrawn at any stage, the group would have finished the job in 55% of the time. How many workers were there in the group?

(A) 40

(B) 50

(C) 10

(D) 45

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