7. If a bus travels 126 km in 3 hours and a train travels 315 km in 5 hours, then the ratio of their speeds is
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Answer:
A bus travels 126km in 3hrs.
⇒ A train travels 315km in 5hrs.
⇒ We know, Speed=
Time
Distance
∴ Speed of bus =
3
126
=42km/hr
∴ Speed of train =
5
315
=63kmhr
∴ Ratio of speeds =
63
42
=
3
2
=2:3
Step-by-step explanation:
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