Aptitude Questions and Answers for PLACEMENTS

Ques. Three taps A, B and C can fill a tank in 12, 15 and 20 hours respectively. If A is open all the time and B and C are open for one hour each alternately, the tank will be full in:
Op 1: 6 hrs.
Op 2: 20/3 hrs
Op 3: 7 hrs
Op 4: 15/2 hrs
Op 5:
Correct Op : 3

Ques. Two pipes can fill a tank in 20 and 24 minutes respectively and a waste pipe can empty 3 gallons per minute. All the three pipes working together can fill the tank in 15 minutes. The capacity of the tank is:
Op 1: 60 gallons
Op 2: 100 gallons
Op 3: 120 gallons
Op 4: 180 gallons
Op 5:
Correct Op : 3


Ques. Ram and Shyam together do a work in 8 days. Both of them began to work. After 3 days Ram fell ill. Shyam completed the remaining work in 15 days. In how many days can Ram complete the whole work?
Op 1: 12
Op 2: 17
Op 3: 16
Op 4: 15
Op 5:
Correct Op : 1




Ques. Two workers A and B were employed for a work. A takes 8 hour more than the time taken by A and B together. If B takes 4.5 hours more than the time taken by A and B together, how long would A and B take together to complete the work?
Op 1: 7 hours
Op 2: 6 hours
Op 3: 5 hours
Op 4: 4 hours
Op 5:
Correct Op : 2