There were 300 members in a cohort of rats born in March. 260 of the rats are still alive\ at the start of May and 220 rats are alive at the start of July.\ a. What is the survivorship at the start of May? Round to the nearest hundredth.\ \ b. What is the mortality rate from the beginning of May to the beginning of July?\ Round to the nearest hundredth.\ c. If the survivorship during July is 0.4 , how many rats died during the month of July+?\ Round to the nearest whole number.

8. There were 300 members in a cohort of rats born in March. 260 of the rats are still alive at the start of May and 220 rats are alive at the start of July. a. What is the survivorship at the start of May? Round to the nearest hundredth. 300260=0.81 b. What is the mortality rate from the beginning of May to the beginning of July? Round to the nearest hundredth. c. If the survivorship during July is 0.4 , how many rats died during the month of July+? Round to the nearest whole number