Question
Billy and Shiyun left Town Q for Town R at the same time. When Billy reached Town R in 4 hours, Shiyun had only completed 57 of the distance between the two towns. Shiyun's speed was 22 km/h slower than Billy. What was Billy's speed?
5 m

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Billy and Shiyun left Town Q for Town R at the same time. When Billy reached Town R in 4 hours, Shiyun had only completed 57 of the distance between the two towns. Shiyun's speed was 22 km/h slower than Billy. What was Billy's speed?