Question
Jack and Barbara left Town P for Town Q at the same time. When Jack reached Town Q in 5 hours, Barbara had only completed 49 of the distance between the two towns. Barbara's speed was 30 km/h slower than Jack. What was Jack's speed?
5 m

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Jack and Barbara left Town P for Town Q at the same time. When Jack reached Town Q in 5 hours, Barbara had only completed 49 of the distance between the two towns. Barbara's speed was 30 km/h slower than Jack. What was Jack's speed?