Danish-based publishing company Gyldendal has acquired a 60 pct. stake of Danish tutoring company, MentorDanmark, for DKK 57m. MentorDanmark is a tutoring agency for elementary and high school students. The deal values MentorDanmark at DKK 95m. MentorDanmark reported a gross profit of DKK 17m and EBITDA of DKK 5.1m in 2017, corresponding to an EV/EBTIDA multiple of 18.6x.