Time And work – Set 9

Time and work related questions are very important for competitive exams with usually 2-3 questions coming from this section. We will be coming up with over 20 sets on time and work set problems for your practice.

Q1. 24 men working 8 hours a day can finish a work in 10 days. Find the number of men required to finish the same work in 6 days working 5 hours a day?
(a) 60
(b) 64
(c) 80
(d) 72
(e) None of these

Q2. A machine A can print one thousand books in 10 hours, machine B can print the same number of books in 12 hours while machine C print them in 15 hours. All the machines are started at 9 a.m. while machine A is closed at 11 a.m. and the remaining two machines complete the work. Approximately at what time will the work be finished?
(a) 11:30 a.m.
(b) 12 noon
(c) 12:30 pm
(d) 2:20 pm
(e) None of these

Q3. The work done by a man, a woman and a child is in the ratio of 3 : 2 : 1. There are 20 men, 30 women and 48 children in a factory. Their weekly wages amount to Rs 840, which is divided in the ratio of work done by the men, women and children. What will be the wages of 15 men, 21 women and 30 children for 2 weeks?
(a) Rs 585
(b) Rs 292.5
(c) Rs 1170
(d) Rs 900
(e) None of these

Q4. A work could be completed in 100 days by some workers. However, due to the absence of 10 workers, it was completed in 110 days. The original number of workers was:
(a) 100
(b) 110
(c) 55
(d) 50
(e) None of these

Q5. A can do a work in 12 days. When he had worked for 3 days, B joined him. If they complete the work in 3 more days, in how many days can B alone finish the work?
(a) 6 days
(b) 12 days
(c) 4 days
(d) 8 days
(e) None of these

SOLUTIONS:

1.B
2.D
3.C
4.B
5.A