Question

If x and y vary directly and x=25 when y=3 , find y when x=35.​

Answer 1

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The value of y=5 when x=15.

Step-by-step explanation:

Given :

• If x and y vary inversely and x= 25, when y= 3.

To Find :

• The value of y, when x=15?

Solution :

• As x and y vary inversely proportional which means

• x × 1 / y

• x= k / y

Where, k is inversely proportional constant

So,

• xy=k

Now, Substituting

• x=25 and y=3

• ( 25 ×3 )=k

• k=75

Put back in the equation,

• xy=75

Now, Put x=15

• 15y=75

• y={75÷15]

• y=5

Therefore, The value of y=5 when x=15

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