150 seconds
A good time would be 29 seconds.
The average time for an 8-year-old boy to swim 50m freestyle is typically around 45-60 seconds. However, this can vary depending on the swimmer's level of experience and training.
There really isn't an average time because it varies about how fast people are. But I would say around 59.999 seconds?
My son is 9.5 years old and does 21.5 seconds, he is pretty good at his class
65sec
Most likely 18 seconds or slower.
I think anything under 30 seconds is pretty good.
The average 100 yard time for a 7 year old boy depends on which stroke they are swimming and the length of the pool. A typical time for a boy younger then 10 swimming the 100 yard freestyle is 1 minute 10 seconds.
35 to 40 secs or look at this and decide how good you want to be. http://www.ymcaswimminganddiving.org/2011SC/results/2012%20QT.pdf
The average of a year 7 student is 1.49 meters
10-15 meters a year