Question

A car leaves Hyderabad at 6:00 am and reaches Vijayawada at10:00am.Another car
leaves Vijayawada at 8:00 am and reaches Hyderabad at 11:20 am
at what time do the two cars cross each other?​

Answer 1

Answer:

at 8.54 they both meet

Step-by-step explanation:

let distance to be travelled is 400 kms

so car A speed=100kms/hr (400/4 hrs)

Car B speed=120km/hr (400/10/3)

11.20 mins can be written as 11+(20/60)= 10/3

so when car B starts, Car A aready travels  for 2 hrs at 100 kms/hr so 200 kms travelled

now car B starts at 8 am

then speeds will sum of speed as they are approaching towards each other

S=S1+S2=220kms/hr

distance=200kms  but not 400 because , A travelled already 200 kms

SO speed=dist/time

time=200/220=0.9

to convert this ,

if 1 hr = 60 mins

then 0.9 hr=???

0.9*60=54 mins

T=54 mins

Adding time from 8AM gives 8:54 AM is reqd answer

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