Question

if A Varies inversely with B and if B=3 then A=8, then find B if A=2

Answer 1

Answer:

Step-by-step explanation:

A varies as 1/B

Or, A= k/B [where k is constant of proportionality]......(1)

If B=3 then A=8;

Therefore from (1) k= 8/3

So when A=2; B=k/A

B=(8/3)/2

B=4/3

Answer 2

Answer:

Step-by-step explanation:

Given that A is inversely proportional to B

So A=K×1/B

Now, K=A×B

Putting the values of A and B

K= 8×3

K= 24

Now A= 2

Then

K=A×B. From above

24=2×B

B=24÷2

B = 12