The Top of one tree is 16 feet higher than the top of another tree. The heights of the two trees are in the ratio 3:4. How tall is the tallest tree?

Let one of the trees be x.

Other is = (x + 16)

Ratio : x : (x + 16) = 3:4

Therefore: x / (x + 16) = 3/4 Cross Multiply

4*x = 3 * (x + 16)

4x = 3x + 48

4x - 3x = 48

x = 48.

The taller tree is (x + 16) = (48 + 16) = 64

Taller tree is 64 feet.