Mathematics, 13.06.2021 03:40, chapmel20
Two persons work together at the local aquarium. It takes the first person 120 minutes to clean the jellyfish tanks. Since the second person is new to the job, it takes him longer to preform the same task. When working together, they can perform the task in 70 minutes. How long does it take the second person to do the task by himself?
Answers: 3
Mathematics, 22.06.2019 00:00, cutie22327
This summer the number of tourists in salem increased 4.5% from last years total of 426000. how many more tourists came to salem this summer
Answers: 1
Two persons work together at the local aquarium. It takes the first person 120 minutes to clean the...