During laboratory experiments, 30 fishes died from an aquarium tank having 150 fishes during one month. What is the rate of mortality of fishes per month ?
A. 0.2
B. 0.3
C. 0.4
D. 0.5
Answer:A
During laboratory experiments, 30 fishes died from an aquarium tank having 150 fishes during one month. What is the rate of mortality of fishes per month ?
A. 0.2 B. 0.3 C. 0.4 D. 0.5