Question

If x varies inversely as y and x = 30 when y = 45 , find x when y = 90 .
REPLY IMMEDIATELY

Answer 1

Step-by-step explanation:

If x varies inversely as y

xy=k (constant) .. (i)

if x=1.5 and y=60

xy=1.5×60=90

k=90

When y=4.5 then from eq (1)

45×y=k

45×y=90

y=

4.5

90

=20