Question
Henry and Betty left Town C for Town D at the same time. When Henry reached Town D in 4 hours, Betty had only completed 35 of the distance between the two towns. Betty's speed was 20 km/h slower than Henry. What was Henry's speed?
5 m

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Henry and Betty left Town C for Town D at the same time. When Henry reached Town D in 4 hours, Betty had only completed 35 of the distance between the two towns. Betty's speed was 20 km/h slower than Henry. What was Henry's speed?