Question

Leon's social studies average in the first quarter was 96. In the second quarter, his average was 80. What was the percent decrease in his social studies grade?

A. 8%
B. 16%
C. 20%
D. 24%

Answer 1

The percent decrease in Leon's social studies grade is calculated by subtracting the second quarter average (80) from the first quarter average (96), dividing by the first quarter average, and then multiplying by 100. The correct answer is 16%, which is option B.

Step-by-step explanation:

To calculate the percent decrease in Leon's social studies grade, we subtract the second quarter average from the first quarter average and then divide the result by the first quarter average. Finally, we multiply by 100 to get the percentage.

Percent Decrease = ((First Quarter Average - Second Quarter Average) / First Quarter Average) × 100

So, Percent Decrease = ((96 - 80) / 96) × 100 = (16 / 96) × 100 = 0.1667 × 100 = 16.67%

The correct answer is B. 16%. This percentage shows how much Leon's grade decreased from the first quarter to the second quarter. The correct selection is based on the calculation provided and represents a substantial decrease in performance between the two quarters.