Question

In a population 200 mice on dark soil, 40% has dark coat coloration and 60% light coat coloration at the start of the year. Dark mice blend into the soil and avoid predation; they have a 75% chance of surviving the year. Light mice stand out and are easy for predators to spot; they have a 50% chance of surviving the year. How many dark and light colored mice will survive the year? Show your work.

Answer 1

Answer

Given that there are 200 mice

40% of this 200=(40$\times$200)/100

=80 dark coat colored mice

60% of 200=200-80

=120 light coat colored mice

75% of 80=(75$\times$80)/100

=60 dark coat colored mice will survive the year

50% of 120=(50$\times$120)/100

=60 light coat colored mice will survive the year