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ibm Placement Papers with Solution Page 168

(#M40004181) IBM QUESTION Boat & streams Keep an EYE

Speed of boat in still water is 10kmph..if it travels 24km downstream,16km upstream in the same amount of time,what is the speed of the stream?

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(#M40004179) IBM QUESTION Time & distance Keep an EYE

A ball falls from a height of 8ft, bounces back to half the distance & continues till it comes to rest, What is the total distance travelled by the ball?
a)24ft b)36ft c)infinite d)can't be determined

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(#M40004176) IBM QUESTION Profit & loss Keep an EYE

If a person sells a product for Rs 141/-, he suffers a loss of 6% if he has to have a profit of 10%, at what price should he sell it?

Asked In IBM (13 years ago)

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(#M40004174) IBM QUESTION Surfaces Keep an EYE

A cube of 3 units is painted on all sides. If this cube is divided into cubes of 1unit, How many cube have none of their faces painted?
a)3 b)2 c)1 d)0 e)none of these

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(#M40004171) IBM QUESTION Numbers Keep an EYE

Which of the following is the sum of 3 consecutive prime numbers?
a)49 b)59 c)both a & n d)none of these

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(#M40004170) IBM QUESTION Area Keep an EYE

If the area of a square is increased by 69%, by what & has its side increased?

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(#M40004167) IBM QUESTION Area Keep an EYE

A square plot of some size , at four corners equal squares of some size are cut and is formed as open box. If this open box carries 128ml of oil. What is the size of the plate i.e. side
a.17 b.14 c.13 d.none of these

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(#M40004165) IBM QUESTION Miscellaneous Keep an EYE

In a class , except 18 all are above 50 years. 15 are below 50 years of age. how many people are there
a) 30 b) 33 c) 36 d) none of these.

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(#M40004163) IBM QUESTION Miscellaneous Keep an EYE

A person has Rs 100/- in his pocket, he can as 25 pencils or 15books. He kept 15% of the money for travelling expenses and purchased 5 pencils.So how many books he can purchase with the remaining money.

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(#M40004160) IBM QUESTION Time & distance Keep an EYE

If a car starts from A towards B with some velocity due to some problem in the engine after travelling 30km.If the car goes with 4/5 th of its actuval velocity the car reaches B 45min later to the actual time. If the car engine fails ofter travelling 45km, the car reaches the destination B 36min late to the actual time , what is the initial velocity of car and what is the distance between A and B in km

Solution

Let the distance between A and B is x and the velocity initially is v
then according to the given conditions
[30/v]+[(x-30)/(4v/5)] = [x/v]+3/4 here 3/4 is for 45 minute
[45/v]+[(x-45)/(4v/5)] = [x/v]+3/5 here 3/5 is for 36 minute
on solving we will get (x-30)/v = 3 and (x-45)/v = 12/5
or x-30 = 3v and x-45 = 12v/5 or x = 105 and v = 25

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Asked In IBM (13 years ago)

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