Question

If a is inversely proportional to b/2 and a = 1 when b = 10, then what is the value of a when b = 35? A1. 1/7 A2. 1/5 A3. 2/9 A4. 9/4 A5. 2/7

Answer 1

Answer:

A5 .  $\frac{2}{7}$

Step-by-step explanation:

Given in ques as a inversely proportion to b/2

it can be written as a∝$\frac{1}{b/2}$

Now we put a proportionality constant (k) here

so, a=k$\frac{1x}{b/2}$

or  a=$\frac{k2}{b}$

    Now for a= 1   and b= 10

1= $\frac{2k}{10}$

10= 2k

or,k=5

Now agin for b= 35 and take k value as 5, we get a value

a=$\frac{2*5}{35}$

so, a=$\frac{2}{7}$    Answer