Question

91. 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 -
(a) 3:9:1
(b) 1:3:9
(c) 1:2:4
(d) 4:32

Answer 1

Answer:

Required ratio =

1

:

2

:

3

3 2 1

=

1

: 1 : 3

3

1

× 3 : 1 × 3 : 3 × 3

3

∴ Speed =

Distance

Time

= 1 : 3 : 9