TS ICET 2015 Question Paper with Solutions for online practice

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Question : 107 of 200

Marks: +1, -0

Three trains A, B and C moving at speeds

s_1, s_2

and

s_3

respectively take times

t_1, t_2

and

t_3

respectively to cover a distance of x kms. If

t_1: t_2: t_3

= 20:15 :12, then

s_1: s_2: s_3

= ....

2 : 3 : 4
3 : 4 : 5
4 : 5 : 6
5 : 6 : 7

Solution:

\text "For equal distance, speed"∝1/\text "time taken"

∴S_1:S_2:S_3=1/t_1:1/t_2:1/t_3

=1/20:1/15:1/12=3/60:4/60:5/60=3:4:5

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