Question
Gwen started brisk walking at 06 00. Mary started brisk walking 9 min later but stopped brisk walking 19 min earlier than Gwen. Gwen stopped brisk walking at 07 10. How long did Mary brisk walk? Give your answer in this format. (Eg 1 h 20 min)
2 m

Click button first when a symbol is required. X

Gwen started brisk walking at 06 00. Mary started brisk walking 9 min later but stopped brisk walking 19 min earlier than Gwen. Gwen stopped brisk walking at 07 10. How long did Mary brisk walk? Give your answer in this format. (Eg 1 h 20 min)