Answer:
Answer is option 3
Step-by-step explanation:
[tex]tanner \: time = 7 \sqrt{2} \: sec \\ aidans \: time \: = \: 6 \sqrt{2} \: sec \\ cellas \: time = 12 \sqrt{2} \: sec \\ theras a\: time = 9 \sqrt{2} \: sec \\ to \: find \ \: : time \: taken \: by \: them \: to \: finish \: the \\ \: relay \: race \: together \\ hence \: we \: want \: t o \: add \: al l\: durations \\ on \: adding \\ 7 \sqrt{2} + 6 \sqrt{2} + 12 \sqrt{2} + 9 \sqrt{2} \\ = ( 7 + 6 + 12 + 9) \sqrt{2 } \\ = 34 \sqrt{2} [/tex]
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