It is an advertising ploy. Service stations know that ending the advertised price for gasoline with 9/10ths makes drivers feel they are paying less for fuel. When you see the price for gasoline at $3.60 and 9/10 per gallon your brain registers this as 3.60 per gallon, not $3.61.
Three tenths of a cent is $.003
Eight tenths of a cent can be written as $0.008. This is because one cent is equal to 1000 milliseconds, so eight tenths of one cent is 8 divided by 1000. Thus, it is represented as a decimal in dollars as 0.008.
0.8 cents.
It is 20 per cent.
The extra "tenths" is a very old tradition that's never gone away. In 1935, a Reno Nevada newspaper wrote about "selling third grade gasoline at eight and nine-tenths cents a gallon."In those times, a penny had considerable value. To raise the price of gasoline from 8 to 9 cents would be more than a 12 percent hike. To compete, gas stations raised prices by tenths of a penny. Around this time, federal and state excise taxes were also introduced in increments of tenths of a cent, so it made sense to keep the decimal value.Perpetuated for Profit?The tradition stuck. The U.S. Energy Information Administration, 'prime suppliers' of 'motor gasoline' reported sales of 372,833.5 thousand barrels sold in February 2007. These gas sales collected US$ 141 million in nine-tenths-of-a-cent increments. With gasoline prices in the US$ 2.00 to US$ 4.00 range, the 9/10 no longer serves a constructive purpose, and occasionally measures have been introduced to abolish it. From 1980 to 1984, the state of Iowa experimented with even cents, but eventually returned to the 9/10 pricing.
That is equal to .003
seven tenths or 70 per cent
0.3 cents
One peso and ninety and nine tenths of a cent can be written in decimal form as 1.909. The "one peso" represents 1.00, "ninety cents" is 0.90, and "nine tenths of a cent" is 0.009. Adding these together gives you 1.00 + 0.90 + 0.009 = 1.909.
Ten per cent
7S CENT PER GALLON
Gasoline is priced at $3.65.9 in Moscow, Idaho, where I live.