Question
Simon jogged while Yen walked from the same place but in opposite directions along a straight road. After 4 hours, they were 28 km apart. Yen’s average speed was 1.8 km/h slower than Simon’s average speed. What was Yen’s average walking speed in km/h? Express your answer in decimal.
3 m

Click button first when a symbol is required. X

Simon jogged while Yen walked from the same place but in opposite directions along a straight road. After 4 hours, they were 28 km apart. Yen’s average speed was 1.8 km/h slower than Simon’s average speed. What was Yen’s average walking speed in km/h? Express your answer in decimal.