- For Teachers Which is the correct idiom 'rates for' or 'rate
of'? I have read both of them. e.g The rate of change of speed
is very rapid. 'Suicide rates for the soldiers increased' NY
Times. Which usage is correct or which one is more appropriate
in what situation. Thanks for taking time to reply. I guess my
question was little different. I wanted to know what are the
situations where 'rate of' is more appropriate than 'rate for'.
Why not 'Rate of suicide among the soldiers'?