Answer:
Total time spent for exercising is 2 hours and 36 minutes or [tex]2\frac{3}{5}\ hours[/tex]
Step-by-step explanation:
Given:
Time spent in weight lifting is, [tex]T_1=\frac{7}{5}\ h[/tex]
Time spent in swimming is, [tex]T_2=\frac{2}{5}\ h[/tex]
Time spent in running is, [tex]T_3=\frac{4}{5}\ h[/tex]
Total time spent in all these exercises is equal to the sum of hours spent for each exercise. Therefore,
Total time spent = Time spent for weight lifting + Time spent for swimming + Time spent for running.
[tex]T_{Total}=T_1+T_2+T_3\\\\T_{Total}=\frac{7}{5}+\frac{2}{5}+\frac{4}{5}\\\\\textrm{Denominator is same. So, we add all the numerators and divide with the same denominator}\\\\T_{Total}=\frac{7+2+4}{5}\\\\T_{Total}=\frac{13}{5}=2\frac{3}{5}\ h\\\\or\\\\T_{Total}=2\ h+(\frac{3}{5}\times 60)\ min\\T_{Total}= 2\ h\ 36\ min[/tex]
Therefore, total time spent for exercising is 2 hours and 36 minutes or [tex]2\frac{3}{5}\ hours[/tex]
