Ques 221 : Choose the correct answer.

Some persons can do a piece of work in 12 days. Two times the number of such persons will do half of that work in:

Option 1 : 6 days

Option 2 : 4 days

**Option 3 : 3 days**

Option 4 : 12 days

Ques 222 : Choose the correct answer.

Ronald and Elan are working on an assignment. Ronald takes 6 hours to type 32 pages on a computer, while Elan takes 5 hours to type 40 pages. How much time will they take, working together on two different computers

to type an assignment of 110 pages ?

Option 1 : 7 hours 30 minutes

Option 2 : 8 hours

**Option 3 : 8 hours 15 minutes**

Option 4 : 8 hours 25 minutes

Ques 223 : Choose the correct answer.

A and B can do a work in 12 days, B and C in 15 days, C and A in 20 days. If A, B and C work together, they will complete the work in:

Option 1 : 5 days

Option 2 : 47/6 days

**Option 3 : 10 days**

Option 4 : 47/3 days

Ques 224 : Choose the correct answer.

A and B can do a job together in 7 days. A is 7/4 times as efficient as B. The same job can be done by A alone in:

Option 1 : 28/3 days

**Option 2 : 11 days**

Option 3 : 49/4 days

Option 4 : 49/3 days

Ques 225 : Choose the correct answer.

A and B can complete a work in 15 days and 10 days respectively. They started doing the work together but after 2 days B had to leave and A alone completed the remaining work. The whole work was completed in:

Option 1 : 8 days

Option 2 : 10 days

**Option 3 : 12 days**

Option 4 : 15 days

Ques 226 : Choose the correct answer.

A, B and C together can complete a piece of work in 10 days. All the three started working at it together and after 4 days A left. Then B and C together completed the work in 10 more days. A alone could complete the work in:

Option 1 : 15 days

Option 2 : 16 days

**Option 3 : 25 days**

Option 4 : 50 days

Ques 227 : Choose the correct answer.

One pipe can fill a tank three times as fast as another pipe. If together the two pipes can fill the tank in 36 minutes, then the slower pipe alone will be able to fill the tank in:

Option 1 : 81 min

Option 2 : 108 min

**Option 3 : 144 min**

Option 4 : 192 min

Ques 228 : Choose the correct answer.

A large tanker can be filled by two pipes A and B in 60 minutes and 40 minutes respectively. How many minutes will it take to fill the tanker from empty state if B is used for half the time and A and B fill it together for the other half ?

Option 1 : 15 min

Option 2 : 20 min

Option 3 : 27.5 min

**Option 4 : 30 min**

Ques 229 : Choose the correct answer.

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:

Option 1 : 6 hrs.

Option 2 : 20/3 hrs

**Option 3 : 7 hrs**

Option 4 : 15/2 hrs

Ques 230 : Choose the correct answer.

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:

Option 1 : 60 gallons

Option 2 : 100 gallons

**Option 3 : 120 gallons**

Option 4 : 180 gallons