A quantity b varies jointly with c and d and inversely with e. When b is 18, c is 4, d is 9, and e is 6. What is the constant of variation? 1/12 1/3 3 12

Question

asked Feb 23, 2017 180k views

2 Answers

Prakash Vishwakarma · Answer 1 · 2017-02-28T19:46:23+0000

b
$\alpha$
(cd)/(e)

b=

Where k is a constant of proportionality.
b=18, c=4,d=9, e=6
Finding the value f k,
18=
(k*4*9)/(6)

6k=18
k=3
The equation then is;
b=
(3cd)/(e)

The constant of variation=3