Question

3. X varies inversely as y, when x = 20 then y = 5, if x = 40 then y = ?​

Answer 1

Step-by-step explanation:

$\inverse{purple}$

Answer 2

Step-by-step explanation:

xy=20*5=100

now x=40,y=?

xy=40*?

but multiplication remain constant as it is inverse proportion

100=40*?

?=100/40

?=10/4

?=2.5

y=2.5