sizzlingkavya
New member
- Joined
- Dec 3, 2009
- Messages
- 16
Question - 1: - An infectious strain of bacteria increases in number at a relative growth rate of 120 percent per hour. When a certain critical number of bacteria are present in the bloodstream, a person becomes ill. If a single bacterium infects a person, the critical level is reached in 24 hours. How long will it take for the critical level to be reached if the same person is infected with 10 bacteria?
Your answer is ____________ hours.
Question - 2: - You go to the doctor and he gives you 17 milligrams of radioactive dye. After 12 minutes, 4.75 milligrams of dye remain in your system. To leave the doctor's office, you must pass through a radiation detector without sounding the alarm. If the detector will sound the alarm if more than 2 milligrams of the dye are in your system, how long will your visit to the doctor take, assuming you were given the dye as soon as you arrived? Give your answer to the nearest minute.
You will spend ____________ minutes at the doctor's office.
I was trying to do these questions but i didn't get the exact answer.
Your answer is ____________ hours.
Question - 2: - You go to the doctor and he gives you 17 milligrams of radioactive dye. After 12 minutes, 4.75 milligrams of dye remain in your system. To leave the doctor's office, you must pass through a radiation detector without sounding the alarm. If the detector will sound the alarm if more than 2 milligrams of the dye are in your system, how long will your visit to the doctor take, assuming you were given the dye as soon as you arrived? Give your answer to the nearest minute.
You will spend ____________ minutes at the doctor's office.
I was trying to do these questions but i didn't get the exact answer.