$\"\"$

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Convert the time units from minutes to hour.

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Swimming time, $\"\"$ .

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Biking time, $\"\"$ .

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Running time, $\"\"$ .

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Find the individual speeds:

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Find the speed of the steve in swim race:

\

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$\"\"$

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$\"\"$ (Substitute: $\"\"$ and $\"\"$ )

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$\"\"$ (Simplify)

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Find the speed of the steve in biking race:

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$\"\"$

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$\"\"$ (Substitute: $\"\"$ and $\"\"$ )

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$\"\"$ (Simplify)

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Find the speed of the steve in running race:

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$\"\"$

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$\"\"$ (Substitute: $\"\"$ and $\"\"$ )

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$\"\"$ (Simplify)

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$\"\"$

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Find the average speed by using the formula \ \

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$\"\"$ \ \

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$\"\"$

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$\"\"$

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The avarage speed is $\"\"$ .