The diference of two numbers is 1000, the sum of them is 6 times as more as the smaller number . Find the greater ?

A class has 1/5 boy and 1/3 girl students. Know that the number of boys is 10 more than that of girls. How many boys in class ?

John studies at school 3 hours and 15 minutes a day. Each week John has 5 school days. How much time does John study at school in a week?

A store provides food for 500 peoples to consume in 60 days. If it provides for 400 peple, how many days will they consume food ?

A worker makes 7 products in 85 minutes and 45 seconds. How much time does it take for him to make 15 products? (second)

A worker makes 3 products in 42 minutes and 30 seconds. How much time does it take for him to make 1 product?

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 ) 

Two person complete a job in 16 hours. If the first person does in 3 hours and the second person does in 6 hours, the job will be completed 25 %. How many hours does it take the second worker to complete the job alone? 

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 1/2 of workers of the first team and 1/5 workers of the second team to complete the job together ?

Two person 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?

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 worker 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?

Compare: 1/2 + 3/4 + 5/6 ......... 5/4 + 1/6 + 2/3