Eunice runs around an oval quarter-mile track, completing one lap every 2 minutes and 30 seconds. At this speed, how many seconds will it take him to run a mile?
4 * (120+30) = ?
To find out how many seconds it will take Eunice to run a mile, we can start by calculating the time it takes for him to complete one lap of the quarter-mile track.
Given that Eunice completes one lap every 2 minutes and 30 seconds, we can convert this time into seconds by multiplying the number of minutes (2) by 60 and then adding the number of seconds (30):
2 minutes * 60 seconds/minute + 30 seconds = 120 seconds + 30 seconds = 150 seconds
So, it takes Eunice 150 seconds to run one lap of the quarter-mile track.
Now, to determine the number of laps Eunice needs to run to complete one mile, we divide the total distance of one mile by the distance of one lap (quarter mile):
1 mile / 0.25 mile = 4 laps
Therefore, Eunice needs to run 4 laps to complete one mile.
Finally, to calculate the total time it will take Eunice to run one mile, we multiply the time it takes for Eunice to complete one lap (150 seconds) by the number of laps (4):
150 seconds/lap * 4 laps = 600 seconds
Therefore, it will take Eunice 600 seconds to run one mile.