Question

Last year at a certain high school, there were 50 boys on the honor roll and 80 girls on the honor roll. This year, the number of boys on the honor roll increased by 20% and the number of girls on the honor roll increased by 10%. By what percentage did the total number of students on the honor roll increase? Round your answer to the nearest tenth (if necessary).

Answer 1

the total number of students on the honor roll increased by 13.8%.

Explanation:

Last year, there were a total of 50 + 80 = 130 students on the honor roll.

This year, the number of boys on the honor roll increased by 20%, which means there are now 1.2 * 50 = 60 boys on the honor roll.

The number of girls on the honor roll increased by 10%, which means there are now 1.1 * 80 = 88 girls on the honor roll.

The total number of students on the honor roll this year is 60 + 88 = 148.

The percentage increase in the total number of students on the honor roll is (148-130)/130 * 100% = 13.8%.

Rounding to the nearest tenth, we get that the total number of students on the honor roll increased by 13.8%.