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Speed, Time and Distance

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  1. Three cars travelled distance in the ratio 1 : 2 : 3. If the ratio of the time of travel is 3 : 2 : 1,
    then the ratio of their speed is
    1. 3 : 9 : 1
    2. 1 : 3 : 9
    3. 1 : 2 : 4
    4. 4 : 3 : 2
Correct Option: B

Required ratio =
1
 :
2
 :
3
321

=
1
 : 1 : 3
3

1
× 3 : 1 × 3 : 3 × 3
3

∴  Speed =
Distance
Time

= 1 : 3 : 9


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