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Paper Based test - question

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Re: Paper Based test - question

by gabriel » Sat May 12, 2007 7:32 am
Cybermusings wrote:Hi Guys .... OA coming in after explanations

… ok the eqn of the line PQ is y = -3/5x + 30 …. Where x and y are the coordinates … so we have y = (150-3x)/5 … now since y has to be a integer x can only be multiples of 5 so the values x can assume is .. 0,5,10,15,20,25,30,35,40,45,50 ,, that is 11 values … correspondingly ther wuld be 11 intgere values for y … so there wuld be in all 11 coordinates having only integer values for x and y … so the answer is D
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Re: Paper Based test - question

by jayhawk2001 » Sat May 12, 2007 6:53 pm
Cybermusings wrote:Hi Guys .... OA coming in after explanations
Same as Gabriel. The main thing here is to form the equation for the
line.

y-30 = -30/50x - 0

y = -3/5x + 30

Range of x: 0..50 (11 values - all multiples of 5)

Hence D
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