Three cars covered distances in the ratio 1 : 2: 3. If the ratio of the time of their travel is 3 : 2 : 1, then ratio of their speeds is :
Answer & explanation
Correct answer: option 1
Distance = Speed × Time
C1 : C2 : C3
Distance 1 : 2 : 3
Time 3 : 2 : 1
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Speed \(\frac{1}{3}\) : \(\frac{2}{2}\) : \(\frac{3}{1}\)
1 : 3 : 9
The correct answer is option (1) : $1: 3 : 9$