Question

Last year at a certain high school, there were 88 boys on the honor roll and 125 girls on the honor roll. This year, the number of boys on the honor roll increased by 25% and the number of girls on the honor roll increased by 12%. 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

17.4%

Explanation:

Find new values:

88(1+0.25)=110

125(1+0.12)=140

Last Year This Year

Boys 88 110

Girls 125 140

Total 213 250

Find overall increase:

213(1+r)=250

213(1+r)=250

213(1+r)/213=250/213

1+r=1.173709 (Subtract 1)

r=0.173709 (Multiply by 100 and round to nearest 10th)

Final Answer: 17.4%