JAMB 2017 · UTME (set 2) · Q10

Expressions, formulae & change of subject

Given $M = N\sqrt{\dfrac{SL}{T}}$ , make $T$ the subject of the formula.

Worked solution (try it first)

Divide by $N$ : $\frac MN = \sqrt{\frac{SL}{T}}$ .
Square both sides: $\frac{M^2}{N^2} = \frac{SL}{T}$ .
Cross-multiply to get $T$ on top: $T = \dfrac{N^2SL}{M^2}$ , option B.

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