Question : A can finish a job in 8 hours and B can finish the same job in 12 hours independently. If they work simultaneously, how many hours can they do the same job?

Option 1: 4.8

Option 2: 3.7

Option 3: 4.5

Option 4: 3.2

Question : If $x$ can finish a job in 4 hours and $y$ can finish the same job in 8 hours independently, then they together will finish the job in:

Option 1: 140 minutes

Option 2: 160 minutes

Option 3: 120 minutes

Option 4: 150 minutes

Question : A's efficiency is twice that of B's. A can work only for 8 hours a day while B can work for 12 hours a day. If A can finish a task in 12 days, in how many days can B finish the same task?

Option 1: 8

Option 2: 10

Option 3: 16

Option 4: 12

Question : Richa, Rita and Reena can independently complete a task in 8 hours, 12 hours and 24 hours, respectively. If they work together, how much time will they take to complete that task?

Option 1: 4 hours

Option 2: 5 hours

Option 3: 2 hours

Option 4: 3 hours

Question : 2 men can finish a work in 6 days and 3 women can finish the same work in 4 days. How many days will 1 man and 2 women finish the work if they work together daily?

Option 1: 4

Option 2: 6

Option 3: 8

Option 4: 9

Question : A can do a piece of work in 6 days, working 8 hours a day, while B can do the same work in 4 days, working 10 hours a day. If the work has to be completed in 5 days, how many hours do they need to work together in a day?

Option 1: $4$

Option 2: $5\frac{4}{11}$

Option 3: $6\frac{4}{11}$

Option 4: $4\frac{4}{11}$