What is the percent of change from 50 to 90? Choices: (A)40% decrease (B)80% increase (C)40% increase (D)80% decrease

Calculate Difference: Step 1: Calculate the difference between the final and initial values. Initial value: 50 Final value: 90 Difference = Final value - Initial value = 90 - 50 = 40Calculate Percent Change: Step 2: Calculate the percent of change. Percent of change = (Difference / Initial value) × 100% Percent of change = (40 / 50) × 100% = 0.8 × 100% = 80%Determine Increase or Decrease: Step 3: Determine if it's an increase or decrease. Since the value increased from 50 to 90, it's an increase.

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Math Problems

Grade 8

Percent of change

Full solution

Q. What is the percent of change from

50

90

\newline

Choices:

\newline

(A)

40\%

decrease

\newline

(B)

80\%

increase

\newline

(C)

40\%

increase

\newline

(D)

80\%

decrease

Calculate Difference: Step $1$ : Calculate the difference between the final and initial values. $\newline$ Initial value: $50$ $\newline$ Final value: $90$ $\newline$ Difference = Final value - Initial value = $90 - 50 = 40$
Calculate Percent Change: Step $2$ : Calculate the percent of change. $\newline$ Percent of change = $(\frac{\text{Difference}}{\text{Initial value}}) \times 100\%$ $\newline$ Percent of change = $(\frac{40}{50}) \times 100\%$ = $0$ . $8$ \times $100$ \% = $80$ \%
Determine Increase or Decrease: Step $3$ : Determine if it's an increase or decrease. $\newline$ Since the value increased from $50$ to $90$ , it's an increase.