What is the percent of change from 20 to 30? Choices: (A)10% increase (B)50% decrease (C)50% increase (D)10% decrease

Calculate Difference: Calculate the difference between the final value and the initial value. Difference = 30 - 20 = 10.Determine Original Amount: Determine the original amount for calculating the percent change. Original amount = 20.Calculate Percent of Change: Calculate the percent of change using the formula: (Amount of change / Original amount) × 100%. Percent of change = (10 / 20) × 100% = 50%.Identify Increase or Decrease: Identify whether it is an increase or a decrease. Since the value increased from 20 to 30, it is an increase.

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Math Problems

Grade 8

Percent of change

Full solution

Q. What is the percent of change from

20

30

\newline

Choices:

\newline

(A)

10\%

increase

\newline

(B)

50\%

decrease

\newline

(C)

50\%

increase

\newline

(D)

10\%

decrease

Calculate Difference: Calculate the difference between the final value and the initial value. $\newline$ Difference = $30 - 20 = 10$ .
Determine Original Amount: Determine the original amount for calculating the percent change. Original amount = $20$ .
Calculate Percent of Change: Calculate the percent of change using the formula: $(\text{Amount of change} / \text{Original amount}) \times 100\%$ . $\newline$ Percent of change = $(10 / 20) \times 100\%$ = $50$ \%.
Identify Increase or Decrease: Identify whether it is an increase or a decrease. $\newline$ Since the value increased from $20$ to $30$ , it is an increase.