Question
Rael jogged while Diana walked from the same place but in opposite directions along a straight road. After 5 hours, they were 31 km apart. Diana’s average speed was 2.2 km/h slower than Rael’s average speed. What was Diana’s average walking speed in km/h? Express your answer in decimal.
3 m

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Rael jogged while Diana walked from the same place but in opposite directions along a straight road. After 5 hours, they were 31 km apart. Diana’s average speed was 2.2 km/h slower than Rael’s average speed. What was Diana’s average walking speed in km/h? Express your answer in decimal.