Question

I thought of a number 25 and increased it by a few percent. my new number is 30. by what percent did i increase the number

Answer 1

The number was increased by 20%.

Step-by-step explanation:

To find the percent increase, we can use the formula:

Percentage change = ((New number - Original number) / Original number) × 100

In this case, the original number is 25 and the new number is 30. Plugging these values into the formula, we get:

Percentage change = ((30 - 25) / 25) × 100

Percentage change = (5 / 25) × 100

Percentage change = 0.2 × 100

Percentage change = 20%

Therefore, you increased the number by 20%.

Answer 2

The number 25 was increased by 20 percent to reach 30. This was calculated by subtracting the original number from the new number, dividing by the original number, and multiplying by 100 to express it as a percentage.

Step-by-step explanation:

The student has increased the number 25 by a certain percentage to achieve the new number 30. To find out by what percent the number has been increased, we use the formula for percentage change, which is:

Percentage Increase = [(New Number - Original Number) / Original Number] × 100%

In this case,

Original Number = 25
New Number = 30

First, we calculate the difference between the new number and the original number:

30 - 25 = 5

Then we divide this difference by the original number, and multiply by 100 to convert it to a percentage:

(5 / 25) × 100 = 0.20 × 100 = 20%

Thus, the number 25 was increased by 20 percent to get to 30.