Karel was supposed to add all two-digit numbers that, when divided by ten, give a remainder that can be evenly divided by five. However, he mistakenly counted one of the numbers three times, which resulted in a sum of 1035. Which number did he count three times?

( $S$. Bednářová)
Karel was supposed to add the numbers

$$
10,15,20,25,30,35,40,45,50,55,60,65,70,75,80,85,90,95 \text {. }
$$

Their sum is 945. However, Karel calculated 1035, which is 90 more. Karel counted the number 45 three times.