Question : A, B, and C can do a job working alone in 6, 9, and 18 days, respectively. They all worked together for one day, and then A and B quit. How many days does C working alone take to complete the remainder of the job?

Option 1: 9

Option 2: 6

Option 3: 12

Option 4: 10

Question : A can do 20% of a task in 4 days and B can do $33 \frac{1}{3}$% of the same task in 10 days. They worked together for 9 days and then, C completed the remaining work in 6 days. B and C together will complete 75% of the same work in:

Option 1: 12 days

Option 2: 9 days

Option 3: 11 days

Option 4: 10 days

Question : A, B, and C working alone, can complete a job in 16, 24, and 36 days, respectively. In how many days can they complete the job if they work together?

Option 1: $7 \frac{11}{19}$

Option 2: $5 \frac{17}{19}$

Option 3: $4 \frac{13}{19}$

Option 4: $6 \frac{7}{19}$

Question : A, B, and C can do a job working alone in 50, 75 and 20 days, respectively. They all work together for 4 days, then C quits. How many days will A and B take to finish the rest of the job?

Option 1: 20

Option 2: 30

Option 3: 18

Option 4: 24

Question : A and B together can complete a piece of work in 12 days. They worked together for 5 days and then A alone finished the rest of the work in 14 days. A single person can complete the work in:

Option 1: 24 days

Option 2: 22 days

Option 3: 20 days

Option 4: 18 days

Question : A can do 20% of a job in 7 days and B can do 25% of the job in 7 days if they worked alone. How much of the job (in percentage) can they complete in 7 days if they worked together?

Option 1: 38%

Option 2: 52%

Option 3: 56%

Option 4: 45%