A car left City A for City B at 8 am travelling at an average speed of 60 km/h. One hour later, a bus started its journey from City B for City A. At 11.30 am, the two vehicles were 35 km apart after passing each other earlier. If the car reached City B at 1 pm, at what time would the bus arrive at City A?[4 marks][Answer given: 3 pm]
C
-----> 60 km/h 1 1/2 h
8 am 3 1/2 h 11.30 am 1 pm
|---------------|-----|------- |-------------|
A m B
TB? 11.30 am 2 1/2 h 9 am
35 km <-----
|-------------| B
60 x 1 1/2 = 90 km
90 + 35 = 125 km
125/(2 1/2) = 50 km/h
60 x 5 = 300 km
300/50 = 6 h
3 h 3 h
|------------|-------------|
9 am 12 pm 3 pm
It was 3 pm.
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