Question
Sean and Yen left Town Q for Town R at the same time. When Sean reached Town R in 6 hours, Yen had only completed 25 of the distance between the two towns. Yen's speed was 30 km/h slower than Sean. What was Sean's speed?
5 m

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Sean and Yen left Town Q for Town R at the same time. When Sean reached Town R in 6 hours, Yen had only completed 25 of the distance between the two towns. Yen's speed was 30 km/h slower than Sean. What was Sean's speed?