Question

Last year at a certain high school, there were 100 boys on the honor roll and 80 girls on the honor roll. This year, the number of boys on the honor roll decreased by 2% and the number of girls on the honor roll decreased by 10%. By what percentage did the total number of students on the honor roll decrease ? Round your answer to the nearest tenth (if necessary ).

Answer 1

Answer:
5.6%

Explanation:

2/100 x 100 = 2
100-2 = 98 Boys on new Honor Roll
1/10 x 80 = 8
80-8 = 72 Girls on new Honor roll
180 Original Roll
170 On new Roll
x/100 x 180 = 170
x/100 = 17/18
x = 1700/18
x = 94.4444444
Round 94.4
5.6 percent decrease.