PSLE When Opal started jogging from her home, Mia was 0.7 km ahead. Opal jogged at 13 km/h and Mia jogged at 12 km/h. They went in the same direction and did not change their speeds throughout.
- How far did Opal jog in 45 minutes?
- Who was ahead after 45 minutes? How far apart were they? Give your answers in this format. (Eg Ben, 1.2 km)
(a)
Distance that Opal jogged in 45 minutes
=
4560 x 13
= 9.75 km
(b)
Distance that Mia jogged in 45 minutes
=
4560 x 12
= 9 km
Total distance that Mia jogged
= 9 + 0.7
= 9.7 km
Distance that Opal was ahead of Mia
= 9.75 - 9.7
= 0.050000000000001 km
Opal was ahead by 0.050000000000001 km.
Answer(s): (a) 9.75 km; (b) Opal, 0.050000000000001 km