Number of candidates (in hundreds) who appeared in an exam from five states
| Year | State A | State B | State C | State D |
|---|---|---|---|---|
| 2017 | 105 | 30 | 200 | 120 |
| 2018 | 110 | 185 | 105 | 145 |
| 2019 | 35 | 80 | 200 | 115 |
| 2020 | 80 | 115 | 40 | 45 |
| 2021 | 70 | 145 | 125 | 140 |
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What is the difference between the total number of candidates in 2017 and in 2020 (in hundred candidates)?
Easy