Question

If T=4st/s-t what is the value of s when t=5 and T=40?

Answer 1

put the values in the equation ;)
\[T = \left( \frac{ 4st }{ s-t } \right)\]

t=5 , T=40

substituting the values,


\[40 =\left( \frac{ 4s \left( 5 \right) }{ s - 5 } \right)\]

\[40 = \frac{ 20s }{ s - 5 }\]

\[40 \times \left( s - 5 \right) = 20s\]

\[40s - 200 = 20s\]

\[20s = 200\]

\[s = \frac{ 200 }{ 20 }\]

\[s = 10\]