Find the value of K for which equation x - Ky =2, 3x + 2y =

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 Multiple Choice QuestionsMultiple Choice Questions

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Two numbers are in the ratio 3:4. The product of their HCF and LCM is 2028. Then sum of the number will be

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An article is sold at 20% profit. If its cost price is increased by 50 and at the same time if its selling price is also increased by 30, the percentage of profit decreased by 313%,then the cost price is

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15.

If a3=b2=c1, thena+b+2cb

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16.

Find the value of for which equation x - Ky =2, 3x + 2y = -5 , has unique solution.

  • K-23

  • K=23

  • 23

  • K=-23


A.

K-23

Given, x - Ky= 2

 x - Ky - 2=0

a1=1, b1=-K,  c1=-2

Also, 3x + 2y=-5

3x + 2y+5=0

a2=3,b2=2,c2=5

For unique solution:a1a2b1b2

 13-K2

 K-23

 


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17.

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