If t varies as v, and t = 2 4/7 when v =13/14 , find v when t = 2 1/4 a) 2106/392 b) 13/16 c) 324/52

Answer : b) 13/16

Given : t varies as v

So t = k v  where k is the constant of proportionality.

t = 2 4/7 when v =13/14. Using these values we find out k

t = k * v

Multiply by 14/13 on both sides

So  

We got the value of k. Now we find v when t = 2 1/4

t = k * v

We know the value of t and k

Multiply by 13/36 on both sides

So  

Option B is correct

first one because it can't have a fraction in it

step-by-step explanation: