Final answer:
The number is approximately 125.
Step-by-step explanation:
To find the number, let's represent it as x. We are given that increasing the number by 8% of itself gives 135. Mathematically, this can be expressed as x + 0.08x = 135.
Simplifying this equation, we get 1.08x = 135. Dividing both sides by 1.08, we find that x is approximately 125. Therefore, option b. 125 is the number we are looking for.