I need help with this exercise, as you may see that the first 2 question its about mathematic, but the rest its like it need physic, and this course i study its mathematic 1 so i got confused on how to do other question because the way i see it they are physic question, can anyone help me with this ?

\fPart\tB:\tPractical\tproblem\tsolving Please\tprovide\tyour\tdetailed\tanalyses\tand\tsolutions\tfor\tbelow\tproblems. Problem\t1 A\tGreek\tcruise\tship\tstarts\tits\tdaily\ttours\tat\tthe\tisland\tof\tMikonos.\tA\ttour\thas\t3\tmain\tstops: The\tstop\tA\tis\tlocated\t50+N\tkm\tNorth\tWest\tfrom\tMikonos. The\tstop\tB\tis\tlocated\t70+N\tkm\tNorth\tEast\tfrom\tMikonos. The\tstop\tC\tis\tlocated\t20+N\tkm\tSouth\tfrom\tMikonos. The\tmaximum\tspeed\tof\tthe\tcruise\tis\t30+N\tkm/h. a) The\tmost\tcommon\troute\tof\ta\ttour\tis\tMikonos\t->\tStop\tA\t->\tStop\tB\t->\tStop\tC\t->\tMikonos. i. What\twould\tbe\tthe\ttotal\tlength\t(km)\tof\tthese\troute? ii. How\tlong\twould\tbe\ta\ttour\t(minimum\tnumber\tof\thours)\tif\tit\tfollows\tthis\troute? b) The\tcruise\towner\twants\tto\tminimize\tthe\tlength\t(km)\tof\ta\ttour.\tWhat\twould\tbe\tthe\tshortest return\troute\tpassing\tby\tall\tthe\tthree\tmain\tstops?\tDiscuss\tyour\tsolution(s). c) On\ta\tgiven\tday,\tthe\tsea\tcurrent\twas\tflowing\tdue\tSouth\tat\ta\tspeed\tof\t5\tkm/h. i. What\twould\tbe\tthe\ttotal\tlength\t(km)\tof\tthe\tmost\tcommon\troute\ton\tthis\tday? ii. How\tlong\twould\tbe\ta\ttour\t(minimum\tnumber\tof\thours)\tif\tit\tfollows\tthe\tmost common\troute\ton\tthis\tday? iii. What\twould\tbe\tthe\tfastest\treturn\troute\tpassing\tby\tall\tthe\tthree\tmain\tstops\ton this\tday?\tDiscuss\tyour\tsolution(s). d) On\ta\tstormy\tday,\tthe\tsea\tcurrent\twas\tflowing\tdue\tNorth\tat\ta\tspeed\tof\t15\tkm/h\tand\tcruise\towner decided\tnot\tto\tcancel\tits\ttours.\tThe\tfirst\tcruise\tship\tleaving\tMikonos\treached\tstop\tA\tbut\tthen\tit lost\tcommunication\tand\tits\tGPS.\tNevertheless,\tthe\tcruise's\tcrew\tdecided\tto\thead\ttowards\tstop B\tat\tmaximum\tspeed.\tAfter\t2hours,\tthe\tcrew\trealized\tthey\twere\tgoing\tin\tthe\twrong\tdirection and\thad\tto\tchange\tthe\tcruise\tdirection.\tAfter\tcorrecting\tthe\tdirection,\tthey\treached\tstop\tB\tin\t2 hours\tat\t30\tkm/h.\tWhere\tdid\tthe\tcruise\tchange\tits\tdirection\t(position\twith\trespect\tto\tMikonos)? Discuss\tyour\tsolution(s). ? Stop A Stop B Page 4