Final answer:
To increase 150 by 25%, you multiply 150 by 0.25 to get 37.5, and then add this to the original amount, resulting in a total of 187.5.
Step-by-step explanation:
To increase 150 by 25%, you first calculate what 25% of 150 is. To do this, convert 25% to a decimal by dividing 25 by 100, which gives you 0.25. Then, multiply 150 by 0.25 to find the increase amount:
Add this increase to the original amount to find the new total:
Therefore, when you increase 150 by 25%, you get 187.5.