PSLE
Sarah and Kimberly took part in a cycling race. Sarah cycled at a speed of 24 km/h. Both of them did not change their speed throughout the race. When Kimberly covered ¹₅ the distance, Sarah was 6.8 km in front of her. Sarah reached the finishing line at 11.22 a.m. What time did Kimberly reach the finishing line?
If Sarah continued to cycle until Kimberly reaches the finishing point, the extra distance she covered
= 5 x 6.8
= 34 km

Time taken by Kimberly to complete the race
= Time taken by Sarah to cycle 34 km
= ³⁴₂₄ 
= 1⁵₁₂ h

1 h = 60 min
1⁵₁₂ h = 1⁵₁₂ x 60 = 85 min

85 min after 11.22 a.m.: 12.47 p.m.

Time that Kimberly reached the finishing line: 12.47 p.m.

Answer(s): 12.47 p.m.