Question

y varies inversely with x. If y=30 when x=12, find (i) y,when x=15 (ii) x, when y=18.​

Answer 1

Answer:

y=k/x

xy=k

30x12=k

k=360

I.e xy=360

(1)15y=360

y=24

(2)18x=360

x=20

Step-by-step explanation:

hope useful

Answer 2

Answer:

Step-by-step explanation:

Given that x varies inversely as y.

So product of x and y is constant.

i. e. xy=constant

Now x=12 and y=30.

So xy=12×30=360.

(i) when x=15,y=360÷15=24

(ii) when y=18,x=360÷18=20

Hope you got it.