At 09 15, Julie left Town U and cycled towards Town V. Sabrina left Town U and cycled towards Town V at 09 55. Sabrina's cycling speed was 6 km/h faster than Julie. At 13 15, Sabrina caught up with Julie. Find the cycling speed of each cyclist.

1. Julie
2. Sabrina

(a)
Duration that Sabrina cycled from 09 55 to 13 15
= 3²⁰₆₀
= 3¹₃ h

Distance that Sabrina cycled more than Julie
= 3¹₃ x 6
= 20 km

However, since Julie left 40 minutes earlier than Sabrina and Sabrina caught up with Julie, it means that Julie has cycled 20 km in 40 min.

1 h = 60 min 
40 min = 40 ÷ 60 = ²₃ h

Julie's cycling speed
= 20 ÷ ²₃
= 20 x ³₂
= 30 km/h

(b)
Sabrina's cycling speed
= 30 + 6
= 36 km/h

Answer(s): (a) 30 km/h ; (b) 36 km/h