Question

Y varies inversely with x. When x=3 then y=5. Find the value of x when y =21

Answer 1

Answer:

0.7143ans

Step-by-step explanation:

y=1/x

y=k/x

k=yx

given x=3,y=5

k=5×3=15

when y=21

x=k/y

x=15/21=0.7143ans