A does in ONE day 1/20 part of the work.B in one day does 1/15 part of the work.A+ B TOGETHER do in one day 1/20+1/15 part of the work= 7/60 part of the work.A+B+ C do in one day 1/5 part of the work.C alone does in one day 1/5–7/60 part of the work=[ 5/60 ]part of the workTherefore C alone can do the work in 60/5 days= 12 days answerLET C ALONE TAKE X DAYSTOGETHER IN 1 DAY = 1/20 + 1/15 + 1/X = 1/51/X = 1/5 -1/20–1/15 = 5/60 = 1/12X = 12 DAYS ANSWERA, B, and C can do a piece of work in 12, 15, and 20 days respectively. How long will they take to do it working together?A, B, and C can do a piece of work in 12 days, 15 days, and 10 days respectively. In what time will they all together finish it?A can do a piece of work in 20 days while B can do it in 15 days with the help of C. They finish the work in 5 days. In what time would C alone do it?In 60 days both A & B together do 7 (3 +4)works.In 5 days they did 35/60 =7/12 workSo C did 5/12, in 5 days.He can do 1 work in 60/5 = 12 days.A, B, and C can do a piece of work in 12, 15, and 20 days respectively. How long will they take to do it working together?A, B, and C can do a piece of work in 12 days, 15 days, and 10 days respectively. In what time will they all together finish it?A can do a piece of work in 20 days while B can do it in 15 days with the help of C. They finish the work in 5 days. In what time would C alone do it?A can do a certain job in 12 days. B is 60% more efficient than A. How MANY days does B alone take to do the same job?A can finish a piece of work in 48 days. B is 20% more efficient than A. B started working alone and after few days A replaced him. If A could finish the remaining work in 30 days, for how many days B worked?A and B together can complete a work in 3 days. They start together but after 2 days, B left the work. If the work is COMPLETED after two more days, B alone could do the work in how many days?A can do a piece of work in 20 days and B in 30 days. They work together for 7 days and then both leave the work. Then C alone finishes the remaining work in 10 days. In how many days will C finish the full work?A, B and C together can complete a work in 25 days. If the ratio of efficiency of A, B, and C is 15:10:6 respectively, then in how many days C alone can complete the same work?A, B, and C can do a piece of work in 12, 15, and 20 days respectively. How long will they take to do it working together?A, B, and C can do a piece of work in 12 days, 15 days, and 10 days respectively. In what time will they all together finish it?A can do a piece of work in 20 days while B can do it in 15 days with the help of C. They finish the work in 5 days. In what time would C alone do it?A can do a certain job in 12 days. B is 60% more efficient than A. How many days does B alone take to do the same job?A can finish a piece of work in 48 days. B is 20% more efficient than A. B started working alone and after few days A replaced him. If A could finish the remaining work in 30 days, for how many days B worked?A and B together can complete a work in 3 days. They start together but after 2 days, B left the work. If the work is completed after two more days, B alone could do the work in how many days?A can do a piece of work in 20 days and B in 30 days. They work together for 7 days and then both leave the work. Then C alone finishes the remaining work in 10 days. In how many days will C finish the full work?A, B and C together can complete a work in 25 days. If the ratio of efficiency of A, B, and C is 15:10:6 respectively, then in how many days C alone can complete the same work?A can do 1/2 of a piece of work in 8 days while B can do1/3of the same work in 8 days. In how many days can both do it together?A and B can do a piece of work in 12 days, B and C in 15 days, and C and A in 20 days. How much time will A alone take to finish the job?mark my answer as brainliest please find