Question 292469
walk 3 and swim 1
4*w=3
w=3/4
2*s=1
s=2/4
s+w=5/4
swim diagonal
1^2+3^2=d^2
1+9=d^2
10=d^2
sqrt(10)=d

3.16=d
2*s=3.16
s=1.58 hours
Faster and  safer to walk first.
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