Question

If x and y vary inversely and x=15 then find y when constant of variation is 90 ..


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Answer 1

x=90/y 90 is constant of variation
putting x= 15 y= 6

Answer 2

Given,

x and y vary inversely.

The value of x = 15

Constant of variation = 90

To find,

The value of y.

Solution,

We can simply solve this mathematical problem using the following process:

Mathematically,

If a and b are two inversely related variables, then,

a×b = constant of variation

{Statement-1}

Now, according to the question;

x and y vary inversely

=> xy = constant of variation

{according to statement-1}

=> 15 × y = 90

=> y = 90/15 = 6

=> y = 6

Hence, the value of y is equal to 6.