Question
Sean and Abi left Town V for Town W at the same time. When Sean reached Town W in 4 hours, Abi had only completed 57 of the distance between the two towns. Abi's speed was 18 km/h slower than Sean. What was Sean's speed?
5 m

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Sean and Abi left Town V for Town W at the same time. When Sean reached Town W in 4 hours, Abi had only completed 57 of the distance between the two towns. Abi's speed was 18 km/h slower than Sean. What was Sean's speed?