The following bar chart shows the no. of college students enrolled in two summer camps A and B from 2015 to 2020.

Blank Bars = A

Line Bars  = B

The no. of students enrolled in camp A in 2018 and 2020 together is what percentage of no. of students enrolled in camp B in 2017 and 2018 together?

90.90%

No. of students in camp A in 2018 and 2020 = 220 + 180 = 400

No. of students in camp B in 2017 and 2018 = 180 + 260 = 440

Required percentage = \(\frac{400}{440}\) × 1000 = \(\frac{100}{11}\) = 90.90%