15 \% \text { of } 1 km \quad b
Evaluate
\frac{3bkm}{20}
Differentiate w.r.t. k
\frac{3bm}{20}
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\frac{3}{20}\times 1kmb
Reduce the fraction \frac{15}{100} to lowest terms by extracting and canceling out 5.
\frac{3}{20}kmb
Multiply \frac{3}{20} and 1 to get \frac{3}{20}.
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