Decimal Rates, Parcel Post

A question that I can't seem to find answered in the Wawrukiewicz book: If the parcel post zonal rates (back in the 1930s) for multiples of weight totaled up to include a fraction, e.g. 8c + 1.1c + 1.1c = 10.2c, was the result invariably rounded up, or did the rounding follow the ordinary rules of arithmetic?

Thanks folks --

Stan

I have the revised 2nd edition ... Table 30-1, 4th class, rate period 9, beginning Oct 1, 1932 has a footnote 9 reading in part "Round off decimal cents to next higher cent (for example, 1.1c = 2c)."

I know of not example where the PO ever rounded down, but would be happy to have one pointed out!

I can't imagine that ever happening, rounding down. Revenue rates were the same way, it was always stated as per dollar or fraction so it went up to the next level.

The reason for my OP is that this tag, a Zone 2 usage, would pay (8c + 1.1c = 9.1c ~ 10c) for 2 lbs. if rounded up, but (8c + 1.1c + 1.1c = 10.2c ~ 10c) for 3 lbs. if rounded down ... and I was wondering if perchance the "40" on the stamp side means 40 oz. (= 2.5 lbs.), which would correspond to the latter scenario. Slim evidence, I know ...

BTW Thanks, John, for pointing out the B-W source. I had stared right at that page without seeing ...

What is the origin town name?

Looks to me like Camino, Calif. -- about 130 miles by road from Oakland.

Two pounds? No.

@wyostamp -- If Camino, Camino, Ca to Oakland, Ca is Zone 2 with the crow-fly miles 108. Parcel zones were determined by crow-fly distance, not road distances by the way.

@John Becker -- Footnote 9 was give short shrift.

Now what is this? It is a more than four up to five pound parcel (8 + 1.1 + 1.1 +1.1 + 1.1) totaling 12.4, rounded to 13 cents. Less the 3 cent mailed on rural route discount for matter destined for zones 1-8 (See Footnote 9, again) makes 10 cents exactly.

Now if agricultural Camino wasn't rural routes, then yes it would have been a two pound item. Even today about the only way to notice Camino is the sign, otherwise it remains mostly working farms and ranches which include orchards of 5 acres or more. The big deal in Camino is the fall, September-November Apple Hill Festival put on by the Apple Hill Growers Association in the area from Placerville (old Hang Town) up the road a piece to Camino.