Answer to Question #5281 in Abstract Algebra for Reyah
T1 = S1/V1 = 15/20 = 0.75, or 45 minutes;
running time is
T2 = S2/V2 = 5/6, or 50 minutes;
and swimming time is
T3 = S3/V3 = 1/4 = 0.25, or 15 minutes.
At last, total time is
T = T1 + T2 + T3 = 0.75 + 5/6 + 0.25 = 1 + 5/6, or one hour and 50 minutes.
As we see, the answer is first part 45 minutes the 2nd part 50minutes and the third part 15 minutes and the total time one hour and 50 minutes.
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