Time And work – Set 13
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. 18 Men can complete a project in 30 days and 16 women can complete the same project in 36 days. 15 men start working and after 9 days they are replaced by 18 women. In how many days will 18 women complete the remaining work? (a) 20
(b) 30
(c) 26
(d) 28
(e) 24
Q2. Amit and Sujit together can complete an assignment of data entry in 5 days. Sujit’s speed is 80% of Amit’s speed and the total key are 5,76,000. What is Amit’s speed in key depressions per hour if they work for 8 hours a day?
(a) 4800
(b) 6400
(c) 8000
(d) 7200
(e) 8400
Q3. A certain number of people were supposed to complete a work in 24 days. The work, however, took 32 days, since 9 people were absent throughout. How many people were supposed to be working originally?
(a) 32
(b) 27
(c) 36
(d) 30
(e) 28
Q4. X and Y start from the same point and run around a circular stadium, whose circumference is 4200 m, at the rate of 500 m and 700 m per minute respectively in the opposite direction. They will meet each other in
(a) 3.5 min
(b) 6.0 min
(c) 8.4 min
(d) 2.1 min
(e) 2.8 min
Q5. There are two taps to fill a tank and a third to empty it. When the third tap is closed, they can fill the tank in 10 min and 12 min, respectively. If all the three taps be opened, the tank is filled in 15 min. If the first two taps are closed, in approximately what time can the third tap empty the when it is full?
(a) 8 min and 34 second
(b) 9 min and 32 second
(c) 7 min
(d) 6 min
(e) 12 min
SOLUTIONS:
1.E
2.C
3.C
4.A
5.A
