Question

x varies inversely as y, when x = 15 then y = 10, if x = 20 then y = ?

Answer 1

Hey friend Answer is y=13.333

Answer 2

Answer:

x varies inversely as y, when x = 15 then y = 10

if x = 20 then y = 7.5

Step-by-step explanation:

its given

x ∝  1/y

x = k/y  ( where k is a constant)

=> xy = k

when x = 15 then y = 10

=> 15 * 10 = k

=> 150 = k

hence

xy = 150

if x = 20

then

20y = 150

=> 2y = 15

=> y = 15/2

=> y = 7.5

if x = 20 then y = 7.5