A man travels 800 km partly by train and partly by car. It takes 13 hours and 45 minutes if he travels 450 km by train and rest by car. It would take 125 minutes more if he travels 300 km by train and rest by car, then the ratio of speeds of car and train is.
PLS SEND WITH FULL SOLVING.
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Answer:
Let, the speed of train be x & speed of bus be y.
Speed=
Time
Distance
or T=
S
D
4=
x
60
+
y
240
………….(1)
4 hr 10 min=
x
100
+
y
200
………..(2)
(1)×5
20=
x
300
+
y
240×S
(2)×3
62
25×3
=
x
300
+
y
600
20−
2
25
=
y
1200
−
y
600
2
15
=
y
600
y=80 km/ph
4=
x
60
+
80
240
x=60 km/ph.
solution
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