Nickola swam at a rate of 4 km/hr and ran at a rate of 9 km/hr for a total distance traveled of 57.5 km. If he completed the race in 7.5 hours, how long did he take to complete each part of the race
let x hours nickolas swam and y hours nickolas ran
The system of equations will be:
From the second equation x=7.5-y
Substitute this into first equation:
so, 2 hours nickolas swam and 5.5 hours nickolas ran
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