What is the fuel oil mixture for a homelite gas trimmer model ut20779

Hi a safe fuel mix is 25:1 but most homelites run a mix of 32:1 either one should be ok

FUELING AND REFUELING THE TRIMMER
FUEL MIXTURE
This product is powered by a 2-cycle engine and requires pre-mixing gasoline and 2-cycle oil. Pre-mix unleaded gasoline and 2-cycle engine oil in a clean 1 gallon container approved for gasoline.
Recommended fuel: This engine is certified to operate on unleaded gasoline intended for automotive use.
Mix Homelite Premium Exact Mix oil with gasoline according to the instructions on the package. If Premium Exact Mix oil is not available, use a high quality 2-cycle engine oil, mixed at 2.6 oz. per gallon (US).
Do not use automotive oil or 2-cycle outboard oil.
NOTE: Premium Exact Mix fuel mix will stay fresh up to 30 days. DO NOT mix quantities larger than usable in a 30 day period.
PREMIUM EXACT MIX (50:1)
GASOLINE OIL
1 gallon (US) 2.6 oz.
1 Liter 20 cc (20 ml)