At 10 a.m., Jade and Fanny raced off together from the starting point of a track. Jade ran at an average speed of 1 m/s. Fanny ran at an average speed of 2 m/s. Upon reaching the end of the track, Fanny rested for 6 minutes. She then immediately ran back along the same route at 2 m/s. At 10.35 a.m., Jade met Fanny.

1. Find the total distance covered by the two runners when they met each other. Express your answer in km.
2. Find the length of the trail in km.

(a)
From 10 a.m. to 10.35 a.m. = 35 min

Duration that Jade ran = 35 min
Duration that Fanny ran = 35 -  6 = 29 min

1 min = 60 s

29 min = 29 x 60 = 1740 s
35 min = 35 x 60 = 2100 s

Distance that Jade ran
= 1 x 2100
= 2100 m

Distance that Fanny ran
= 2 x 1740
= 3480 m

Distance that Jade and Fanny ran
= 2100 + 3480
= 5580 m

1000 m = 1 km

5580 m = 5580 ÷ 1000 = 5.58 km

(b)
Length of the trail
= 5.58 ÷ 2
= 2.79 km

Answer(s): (a) 5.58 km; (b) 2.79 km