Time and Work
1. A can complete a work in 15 days. How much work can he do in 3 days?
A. 1/3
B. 1/5
C. 1/6
D. 1/8
B. 1/5
2. A can do a work in 12 days, B in 18 days. How long will they take together?
A. 6.5 days
B. 8 days
C. 7.2 days
D. 9 days
C. 7.2 days
3. A is twice as efficient as B. If B alone takes 24 days, how long will A and B take together?
A. 6 days
B. 8 days
C. 10 days
D. 12 days
B. 8 days
4. A, B, and C can complete a work in 10, 12, and 15 days respectively. How long will all three take together?
A. 3 days
B. 4 days
C. 5 days
D. 6 days
B. 4 days
5. A and B can complete a work in 8 days. If A alone can do it in 12 days, and they receive ₹6000, what is B's share?
A. ₹2000
B. ₹2500
C. ₹3000
D. ₹3500
A. ₹2000
6. A and B can complete a work in 6 and 8 days. They work on alternate days starting with A. How long will they take?
A. 6.5 days
B. 6.75 days
C. 7 days
D. 7.25 days
B. 6.75 days
7. If 15 workers can build a wall in 12 days, how many workers are needed to build it in 9 days?
A. 18
B. 20
C. 22
D. 24
B. 20
8. A can do 2/3 of a work in 16 days. How long will he take to complete the whole work?
A. 20 days
B. 22 days
C. 24 days
D. 26 days
C. 24 days
9. A is 50% more efficient than B. If they together complete a work in 12 days, how long would B alone take?
A. 25 days
B. 28 days
C. 30 days
D. 32 days
C. 30 days
10. 8 men can complete a work in 12 days. How many men are needed to complete the same work in 8 days?
A. 10 men
B. 12 men
C. 15 men
D. 18 men
B. 12 men