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Question

Both uandv vary directly with each other. When uis10, vis15, which of the following is not a possible pair of corresponding values of u andv?


A

2and3

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B

8and12

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C

15and20

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D

25and37.5

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Solution

The correct option is C

15and20


Given

  • u=10v=15

uandv vary directly, hence,

uv=k(constant)

Hence,

uv=1015=23

Now if we observe the options given,

Option (a) 2/3

Option (b)812=23

Option (c) 1520=34

Option (d)2537.5=23

Therefore, 1520 is not the possible pair of corresponding values of uandv.


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