Rearrange formulas to isolate a chosen quantity and interpret the result.
Rearrange a formula to isolate a chosen variable, then substitute values to find its value
Problem
Rearrange \(d~=~rt\) to solve for \(t\), then evaluate \(t\) when \(d~=~180\) and \(r~=~60\).
Big Picture
What this problem is really about
This task has a symbolic stage and a numerical stage, and keeping them in that order makes the variable roles clear. We’ll isolate time by undoing its multiplication by the rate, then substitute the given distance and rate into the resulting ratio. A multiplication check will confirm that the evaluated time recreates the stated distance.
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