Answer:
30 geckos
Explanation:
Write and solve an equation of ratios:
geckos g 3
-------------- = ---------------- = ------
lizards 80 - g 5
This is true because the sum of the number of geckos and the number of lizards is 80.
Cross-multiplying: 5g = 240 - 3g. Combining like terms, we get 8g - 240.
Thus, g = the number of geckos = 30
Note that the number of lizards and geckos together is 80. Subtracting 30 from 80 yields 50, the number of anole lizards.