Question
Xylia took 3 hours 40 minutes to complete her Physics homework. Riordan took 30 minutes less to complete the homework. How long did Riordan take to complete the homework? Express the answer in h and min.
2 m

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Xylia took 3 hours 40 minutes to complete her Physics homework. Riordan took 30 minutes less to complete the homework. How long did Riordan take to complete the homework? Express the answer in h and min.