The Crane and Tortoise Problem
Given the total number of cranes and turtles and their total number of legs, calculates how many cranes and how many turtles there are.

| Total number of legs assuming all are cranes | Light blue section |
| Remaining number of legs | Light yellow section |
| Difference in the number of legs between the cranes and the turtles | /head |
| Number of turtles | |
| Number of cranes |
Number of turtles = (Total number of legs − Total number of legs if all were cranes) ÷ Difference in the number of legs between turtles and cranes
Number of cranes = Total number of heads − Number of turtles
Number of cranes = Total number of heads − Number of turtles
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