A cyclist and a jogger cover a certain distance at a certain speed. If the jogger covers one-third of the distance covered by cyclist in double of the time as that taken by the cyclist, the ratio of the speed of the jogger to that of the cyclist is:
1
1 ∶ 9
2
9 ∶ 1
3
1 ∶ 6
4
6 ∶ 1