Question
Cindy took 3 h 50 min to make a ring. Mary took 50 min less time than Cindy while Tina took 30 min longer that Mary to make a ring. How long did Tina take to make a ring? Express your answer in h and min.
4 m

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Cindy took 3 h 50 min to make a ring. Mary took 50 min less time than Cindy while Tina took 30 min longer that Mary to make a ring. How long did Tina take to make a ring? Express your answer in h and min.