Question
Sam jogged while Zara walked from the same place but in opposite directions along a straight road. After 5 hours, they were 30 km apart. Sam’s average speed was 1.7 km/h faster than Zara’s average speed. What was Zara’s average walking speed in km/h? Express your answer in decimal.
3 m

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Sam jogged while Zara walked from the same place but in opposite directions along a straight road. After 5 hours, they were 30 km apart. Sam’s average speed was 1.7 km/h faster than Zara’s average speed. What was Zara’s average walking speed in km/h? Express your answer in decimal.