Question
John cycled from the library to the mall at 90 m/min. His sister cycled from the mall to the library at 75 m/min. Both of them started cycling towards each other at the same time and did not change their speeds throughout their journey. When John reached the library, his sister was 675 m from the mall. What was the distance between the library and the mall? Express your answer in m.
4 m

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John cycled from the library to the mall at 90 m/min. His sister cycled from the mall to the library at 75 m/min. Both of them started cycling towards each other at the same time and did not change their speeds throughout their journey. When John reached the library, his sister was 675 m from the mall. What was the distance between the library and the mall? Express your answer in m.