Final answer:
The pear tree is 20 meters tall.
Step-by-step explanation:
To find the height of the pear tree, we need to find out how much 4/5 of it is. Since the appletree is 4 meters tall and it is 4/5 the size of the pear tree, we can set up the equation 4 = (4/5) * x, where x represents the height of the pear tree. To solve for x, we can multiply both sides of the equation by 5/4, canceling out the fraction. This gives us 5 * 4 = x, or x = 20.
Therefore, the pear tree is 20 meters tall.
Learn more about Height of trees