(a) 100 kmph
(b) 110 kmph
(c) 120 kmph
(d) 130 kmph
Explanation:
Let speed of the car be X kmph.
Then, speed of the train = (150/100)X = (3/2)X kmph.
75/X – 75/((3/2)X ) = 125/(10 x 60)
=> 75/X – 50/X = 5/24
X = (25×24)/5 = 120 kmph.
(a) 100 kmph
(b) 110 kmph
(c) 120 kmph
(d) 130 kmph
Explanation:
Let speed of the car be X kmph.
Then, speed of the train = (150/100)X = (3/2)X kmph.
75/X – 75/((3/2)X ) = 125/(10 x 60)
=> 75/X – 50/X = 5/24
X = (25×24)/5 = 120 kmph.
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