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Question

Both xandy vary inversely with each other. When xis10,yis6, which of the following is not a possible pair of corresponding values of x andy?


A

12and5

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B

15and4

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C

25and2.4

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D

45and1.3

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Solution

The correct option is D

45and1.3


Given

  • x=10
  • y=6

since xandy vary inversely, so

xy=k(constant)

Putting the value of xandy, we get;

10×6=60

Now if we observe the options available;

Option(a)12and512×5=60

Option (b)15and415×4=60

Option (c)25and2.425×2.4=60

Option (d)45and1.345×1.3=58.3

Therefore, 45and1.3 is not a possible pair of corresponding values ofxandy.


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