How much faster will I go on a new road bike vs my 30 yr old Ross 10 speed?

Mike

New member
Just bought a 2012 cannondale caad 10 4. Been riding my old steel Ross (39lbs) and I avg. 16 mph on a 10 miles ride I do to the trails/park. The new bike does not have the compact crank. Ross has an old skip tooth crank and I think I counted 27teeth so would be equivalent to a 54 in the front?
 
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