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10-93.

Matilda and Nancy are miles apart, bicycling toward each other on the same road. Matilda rides miles per hour and Nancy rides at miles per hour. In how many hours will they meet?  

There are multiple methods you could consider.
Make a table or set up expressions representing Matilda and Nancy when is in hours, etc.

Since together they travel miles during one hour, how many hours will it take to travel the 60 miles?