Swimming 1/4 of a mile uses about the same number of calories as running 1 mile. Gilda ran 26- mile marathon. About how far would her sister have to swim to use the same number of calories Gilda used during the marathon

Gilda sister has to swim 6.5 miles to use the same number of calories Gilda used during the marathonSolution:Given, Swimming [tex]\frac{1}{4}[/tex] of a mile uses about the same number of calories as running 1 mile.  Gilda ran 26- mile marathon.  We have to find about how far would her sister have to swim to use the same number of calories Gilda used during the marathon Now, according to given information, [tex]\begin{array}{l}{1 \text { mile running } \rightarrow \frac{1}{4} \text { mile swimming }} \\\\ {\text { Then, } 26 \text { miles running } \rightarrow^{\prime \prime} n^{\prime \prime} \text { miles swimming }} \\\\ {\text { So, by chris cross method, }} \\\\ {n \times 1=\frac{1}{4} \times 26} \\\\ {\rightarrow n=\frac{26}{4}} \\\\ {\rightarrow n=6.5 \text { miles }}\end{array}[/tex]Hence, gilda sister has to swim 6.5 miles.