The distance between two cities a and b is 330 km. A train starts from a at 8 a.M. And travel towards b at 60 km/hr. Another train starts from b at 9 a.M. And travels towards a at 75 km/hr. At what time will they meet
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train a will travel 60 km in 1 hr...so at 9 am it will cover 60 and the distance beween a & b will be 330-60 =270
now...both trains start at 9 am towards each other..so derived speed is (60+75) = 135 km/hr
speed =dist/time so 135 = 270/time
hence time =2hrs
so..trains will meet at 9+2 =11 am
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Answer:
Step-by-step explanation:
Total distance between A and B=330km/ht.
∵ A start from A at 8.00a.m and B at 9.00a.m
Time span=1hour.
∴ Distance traveled by A in 1hr=60km.
Now distance left when B will start=(330−60)km =270km
Relating speed of train A and B =60km/hr+75km/hr
=135km/hr
(Speed added because both train traveled towards each others.)
∴ Time taken to meet A and B=
135km/hr
270km
=2hr
∴ Both train meets at=9a.m+2hr=11a.m
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