An orphaned kitten was only 4 inches when he was found. In the next two weeks, he doubled in length, and by 4 months old, he had double in length again. What is its current length?
A step-by-step solution is:
16
In two weeks, the kitten measured 4 x 2 = 8 inches.

4 months later, the kitten measured 8 x 2 = 16 inches.

.

So, the final answer is 16