Question

y
is inversely proportional to
x
.
When
y
=
50
,
x
=
4

Work out
x
when
y
=
10

Answer 1

Question:

y is inversely proportional to x. When y=50 , x=4. Work out, when y=10, what is the value of x?

Answer:

If y=10, then x= 20

Step-by-step explanation:

Let k be the constant of proportionality.

y = k/x

k = xy

When y=50 , x=4.

k = 50×4

k = 200

when y=10,

k = 10x = 200

x = 20