Question

8.If B is directly proportional to A and B = 3 whenA = 18, find the value of B when A = 24.​

Answer 1

Answer: B=4

Step-by-step explanation:

B=kA (this is the equation, however it isn’t necessarily needed)

24/18= 1.333333 (find the difference between the given A’s)

3x1.3=4 (multiply this difference by B=3 to get what B equals)

Hope this helps!

Answer 2

Answer:

B=4

Step-by-step explanation:

As we know,

B=KA      

After substituting,

3=18k    

So, we get

 k=B/A     k=3/18   k=1/6

So, after substituting again

B=⅙(A)  

We get,

B=⅙ (24)     B=4