A and B complete a job in 3 hours, C and B complete a job in 4 hours, A and C complete a job in 2 hour. How many hours does it take three person to complete the job together ? ( Write answer as a/b )

2 teams do a job together. The first team completes the job alone in 15 days. The second team completes the job alone in 12 days. How many hours does it $\frac{1}{2}$ of workers of the first team and $\frac{1}{5}$ workers of the second team to complete the job together ?

Find X such that 60 x X + 45 x X = 3500 + 5 x X

Two persons complete a job in 48 days. The first person does in 63 days then resting , the second person continues to complete the job in 28 days. How many hours does it take the first worker to complete the job alone?

Find X such that X x 62 + X x 30 = 4200 – X : $\frac{1}{8}$

To complete a job, 2 teams must do in 6 hours. After 2 hours doing togethher, the second team do other job. The first team completes remaining job in 10 hours . How many hours does it take the second worker to complete the job alone?

2 workers complete a job in 12 hours. The first worker can complete 2/3 of the job alone in 10 hours. How many hours does it take the second worker to complete 1/3 of the job alone?

2 workers do a job together. The first worker completes the job alone in 4 hours . The second worker completes the job alone in 6 hours . How many hours does it two workers to complete the job together ? ( Write result as a/b )

2 workers complete a job in 6 hours. The first worker can complete the job alone in 10 hours. How many hours does it take the second worker to complete the job alone?

Peter, Bob and Jack do a work. If they work in pairs: Peter and Bob can complete it in 12 hours; Bob and Jack can complete it in 10 hours; Jack and Peter can complete it in 15 hours. How many hours does it take 3 persons to complete the job together ?

Find X such that X x $\frac{1}{5}$ + X x $\frac{9}{2}$ = 150 + X x $\frac{37}{10}$

If 1256 < X < 1260 , Find the value of x know that x divide by 3 ?

Find X such that X x $\frac{1}{3}$ + X x $\frac{5}{2}$ = 150 : 5 - X x $\frac{43}{6}$

Find X such that X x $\frac{1}{5}$ + X x $\frac{5}{2}:\frac{1}{3}$ = 147 – 7 x X

Find the value of y ?  $\frac{100}{y}-\frac{28}{y}=9$