At 09 25, Tina left Town Q and cycled towards Town R. Abi left Town Q and cycled towards Town R at 09 55. Abi's cycling speed was 6 km/h faster than Tina. At 12 25, Abi caught up with Tina. Find the cycling speed of each cyclist.
- Tina
- Abi
(a)
Duration that Abi cycled from 09 55 to 12 25
= 2
3060 = 2
12 h
Distance that Abi cycled more than Tina
= 2
12 x 6
= 15 km
However, since Tina left 30 minutes earlier than Abi and Abi caught up with Tina, it means that Tina has cycled 15 km in 30 min.
1 h = 60 min
30 min = 30 ÷ 60 =
12 h
Tina's cycling speed
= 15 ÷
12 = 15 x
21 = 30 km/h
(b)
Abi's cycling speed
= 30 + 6
= 36 km/h
Answer(s): (a) 30 km/h ; (b) 36 km/h
