Student or Learner
I've heard people say
The car was speeding at a rate of 40 miles per hour
The car was speeding at the rate of 40 miles per hour
I've quite often heard people say
"He died at the age of 80"
Is this a question of idiom?
which usage is right?
he died at the age of 80 or he died at an age of 80
if the former is correct, would sayin speeding at the rate of 40 m/h
be correct also?
You can change a rate but not an age.
PS I would say the car was going or something similar- speeding to me is going faster than the law allows.