Daniel ran four 5k races this year.his finishing time for the first three races were 25,35, and 27 minutes. His average time for all four races was 30 minutes. What was the finishing time of Daniels fourth race in minutes?
Let's first write down the information that we have.
4 races
30 Minute average
First 3 times are 25, 35, and 27 minutes
Average = Sum of times/Number of Times
Let's call that last time we are trying to find out "x".
\(30 = \frac{x+25+35+27}{4}\)
\(30 = \frac{x+87}{4}\)
\(120 = x+87\)
\(x = 120-87\)
\(x = 33\)
Daniel took 33 Minutes to run his 4th 5K.