Question

If x and y varies inversely as each other and x = 8 when = 10. Find y when x = 2​

Answer 1

Answer:

x+y=10

8+y=10

y=10-8

y=2

Answer 2

Given:

Values x and y vary inversely as each other and when  x = 8 then y = 10

To Find:

Value of y when x = 2​

Solution:

As x and y vary inversely,

so,

x ∝ 1/y

x = k/y     k is constant

when  x = 8 then y = 10,

so,

8 = k/10

k = 80

Equation become x = 80/y

So, when x= 2

2 = 80/y

y = 80/2

y = 40

Hence, the value y = 40.