Question
PSLE
Tammy and Sarah took part in a cycling race. Tammy cycled at a speed of 18 km/h. Both of them did not change their speed throughout the race. When Sarah covered 15 the distance, Tammy was 4.2 km in front of her. Tammy reached the finishing line at 8.39 a.m. What time did Sarah reach the finishing line?
3 m

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PSLE
Tammy and Sarah took part in a cycling race. Tammy cycled at a speed of 18 km/h. Both of them did not change their speed throughout the race. When Sarah covered 15 the distance, Tammy was 4.2 km in front of her. Tammy reached the finishing line at 8.39 a.m. What time did Sarah reach the finishing line?