Re-arranging A Math Formula ?

Question

I have a math formula:

t= [d/s] / [d/v]

I want to make d the subject. But for the life of me, i can't figure out how. Is it possible?

Answer 1

looks hard

Answer 2

No, you can't.

The d's cancel each other out.

When you divide fractions like you are there (I'm assuming that d, v, s, and t are all algebraic variables and you aren't doing calculus here) you invert the bottom fraction and multiply.

The Right side of your equation becomes

[d/s]*[v/d]

When you do that multiplication, the d's cancel each other out, as you have one in the numerator and one in the denominator.

Answer 3

I think that there might be an error in the question.

It may be that it should read as :-

t = d / s

d = s t

This looks reasonable as could be :-

distance = speed x time.

Answer 4

No, not as written.

t = (d/s) / (d/v) = (d/s) * (v/d) = v/s

Problem is that the variable d is redundant.  Since it is eliminated from the computation of t, it is irrelevant to it, and looking at it the other way round, the value of d cannot be determined in terms of t, v and s.