The distance between Town V and Town W was 183 km. At 07 00, Fanny left Town V and cycled towards Town W. Risa left Town V and cycled towards Town W at 07 20. Risa's cycling speed was 3 km/h faster than Fanny. At 11 00, Risa caught up with Fanny. When Risa was 39 km from Town W, she stopped to wait for Fanny. How far was Fanny from Risa when she stopped to wait for him?
Duration in which Risa cycled for before she caught up with Fanny
= from 07 20 to 11 00
= 3 h 40 min
= 3 ⁴⁰₆₀ h
= 3 ²₃ h

Distance that Risa cycled more than Fanny
= 3²₃ x 3
= ¹¹₃ x 3
= 7 km

Fanny's cycling speed
= 7 x 3
= 21 km/h

Risa's cycling speed
= 21 + 3
= 24 km/h

Distance that Risa cycled before she stopped to wait for Fanny
= 183 - 39
= 144 km

Duration that Risa cycled for after she caught up with Fanny and when she stopped to wait for Fanny
= (144 ÷ 24) - 3²₃
= 6 - 3²₃
= 2¹₃ h

Distance Fanny was from Risa when she stopped to wait
= 3 x 2¹₃
= 7 km

Answer(s): 7 km