[prateek7563]

Originally Posted by Mani_23

CAN ANYBODY SOLVE DIS QUES??

A ladder 25 meters long is placed against a wall with its foot 7 meters away from the foot of the wall. How far should the foot be drawn out so that the top of the ladder may come down by half the distance of the total distance if the foot is drawn out?
A. 6 meters
B. 8 meters
C. 8.75 meters
D. None of the above

acc to me by Pythagoras,we can get the height from the top of the ladder to the foot of the wall...
it would a ryte angled triangle,we '' get 24 as the height

and then acc to ques


we many take the 7+x +12^2=25^2
x=14.9
my answer...none of dese

corredt anser is 8.75..its from IIFT 2008........

may be the answer is wrong

[prateek7563]

Originally Posted by MaskedMenace

My answer is 9

There may be other possibilities

3,9,9,12
2,9,10,11

so what say , we can select via options!!!!

[Mani_23]

Originally Posted by prateek7563

may be the answer is wrong

i dont have any idea..
did u try the question..acc to me its none of dese..

[arya5139]

Originally Posted by kumar08

how did you get this length=root3*a ? can you plz explain...

Thanks

To find length AC of triangle ACE consider triangle ABC
Now, drop perpendicular from point B to meet sideAC at point M

Now AM = AB*sin60 = root3/2*AB
Since, AC = 2*AM => AC = 2*ROOT3/2*AB=root3*a (a isside of hexagon)

hope it clears...

[effort]

LCM of two no.s x and y is 161.find the value of 4x-3y, if y>x,x>1..

[shilpakokkanti]

Hi guys,,

1)R and S are competing a race 1000m race.R gives saleem a head stat of 200m,but his speed is twice that of S.When R reaches the 600m mark,R reduces his speed by half but still beats S by 20 sec.What is S's speed?

ans is 5m/s.


2)In a Km race,R beats S by one minute and S beats T by 30 sec.If R beats T by 250m in the same race,find te time taken by R torun the race.

ans is 270sec.

Please help me by giving the solutions.

[prakharc]

Originally Posted by shilpakokkanti

Hi guys,,

1)R and S are competing a race 1000m race.R gives saleem a head stat of 200m,but his speed is twice that of S.When R reaches the 600m mark,R reduces his speed by half but still beats S by 20 sec.What is S's speed?

ans is 5m/s.


2)In a Km race,R beats S by one minute and S beats T by 30 sec.If R beats T by 250m in the same race,find te time taken by R torun the race.

ans is 270sec.

Please help me by giving the solutions.

Speed of R= 2s
Time taken by R= t=600/2s + 400/s
Distance covered by S in this time= 200+st=900

So remaining 100 m in 20 secs...speed of s= 100/20= 5m/sec

[astute10]

Originally Posted by effort

lcm of two no.s x and y is 161.find the value of 4x-3y, if y>x,x>1..

y=23 , x=7 ....28-69 = -41

[astute10]

Originally Posted by shilpakokkanti

Hi guys,,

1)R and S are competing a race 1000m race.R gives saleem a head stat of 200m,but his speed is twice that of S.When R reaches the 600m mark,R reduces his speed by half but still beats S by 20 sec.What is S's speed?

ans is 5m/s.


2)In a Km race,R beats S by one minute and S beats T by 30 sec.If R beats T by 250m in the same race,find te time taken by R torun the race.

ans is 270sec.

Please help me by giving the solutions.

600/2s+400/s+20 = 800/s

solve for s =5m/s

[prateek7563]

Originally Posted by effort

LCM of two no.s x and y is 161.find the value of 4x-3y, if y>x,x>1..

-41, 7 and 23 are numbers