Question

Solve for t.

Answer 1

\[\frac{ d }{ t+r }=\frac{ 5 }{ t }\]

Answer 2

d/5 = (t+r)/t
d/5 = t/t +r/t
d/5 = 1+r/t
d/5 -1 =r/t
(d-5)/5 =r/t
5/(d-5) = t/r
5r/(d-5) =t

hence t= 5r/(d-5)

Answer 3

Thanks :)

Answer 4

yw