Microsoft Interview Question for Software Engineer / Developers






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3
of 3 vote

36 hours...

1st circle : 8 hours
1/4 back : 2 hours (Total : 0.75 round)
2nd circle : 8 hours (Total : 1.75 round)
1/4 back : 2 hours (Total : 1.50 round)
3rd circle : 8 hours (Total : 2.50 round)
1/4 back : 2 hours (Total : 2.25 round)
Time taken for last 0.75 round : 3/4*8 = 6 hours (Total : 3 rounds where satellite is continuing beyond the point)

Total time : 8+2+8+2+8+2+6 = 36 hours...

- helper.h January 10, 2010 | Flag Reply
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0
of 0 vote

36hours
any tricks at all?

- JS November 03, 2009 | Flag Reply
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0
of 0 vote

why 36, not 32?

- Anonymous November 04, 2009 | Flag Reply
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0
of 0 vote

36 hours.

If we consider that in effect it takes 10 hours to revolve 3/4 of the orbit, it will take 3 such revolutions to pass the starting point twice at which time the satellite will be 3/4 of a revolution away from the starting point. It will take 6 more hours to reach the starting point.

So total become 3*10 + 6 = 36

- karthikvaidy November 05, 2009 | Flag Reply
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0
of 0 vote

Isn't the moon also orbiting?

- Anonymous November 05, 2009 | Flag Reply
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0
of 0 vote

( 8 + 8/4 ) + ( 8 + 8/4 ) + ( 8 + 8/4 ) + 3* ( 8/4) = 36

- Anonymous November 06, 2009 | Flag Reply
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0
of 0 vote

n*8+n*2*(8/4)=12n. When n=3, ans=36.

- Anonymous November 10, 2009 | Flag Reply
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0
of 0 vote

36

- S3 November 13, 2009 | Flag Reply
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0
of 0 votes

I thought its 24 .... Say A is the start First round takes 8 hours + 2 hours to go back (1/4th...say this is point B) of the orbit. Later 1 round from this point B will take 8 hours ( it will cover A) .... now from B go back 1/4th of the path ..which will take 2 hours... ( till now 8 + 2+ 8 + 2) and now to reach A we need to cover 1/2 of orbit ..this will take 4 hours ...thus to cover point A three times we need 24 hours.... Am I wrong?

- Madhavi November 16, 2009 | Flag
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0
of 0 votes

Ques says reaching A & immediately turning back is not counted. So your first count is invalid

- siva December 28, 2009 | Flag
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0
of 0 vote

Its definitely 36... Since satellite go back 1/4 and then it again cover that 1/4. So effectively satellite will cover 1.5 times full distance around globe to cover one round....So three round = 1.5*3*8 = 36......

- kunalgaind November 20, 2009 | Flag Reply
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0
of 0 vote

It's 32 as for last round the quarter back and forth trip should not be counted as it reached the destination. That is 1st round 8+2+2, 2nd round 8+2+2 and final round 8 totals 32.

- Anant November 21, 2009 | Flag Reply
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0
of 0 vote

i too got 24

- Anonymous December 13, 2009 | Flag Reply
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0
of 0 vote

Question would have been more interesting had they asked , how much time would it take for 4 cycles, coz then the 4th time, would have come in just 2 hrs and the answer would have been 38..

- Anonymous January 15, 2010 | Flag Reply
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0
of 0 votes

qn doesn't say to have 3 rounds... it just says to cross a point 3 times... let a point p is almost near to starting point, then time taken to cross the pt
1st time ~ 0
2nd time ~ 12 hrs
3rd time ~ 12 hrs

so in total it will be 24 hrs

- Anonymous March 06, 2010 | Flag


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