Question
Vincent jogged while Tina walked from the same place but in opposite directions along a straight road. After 3 hours, they were 21 km apart. Vincent’s average speed was 1.1 km/h faster than Tina’s average speed. What was Tina’s average walking speed in km/h? Express your answer in decimal.
3 m

Click button first when a symbol is required. X

Vincent jogged while Tina walked from the same place but in opposite directions along a straight road. After 3 hours, they were 21 km apart. Vincent’s average speed was 1.1 km/h faster than Tina’s average speed. What was Tina’s average walking speed in km/h? Express your answer in decimal.