2 1/2
If the price of mints was raised from 5 cents each to 15 cents for two, what was the increase in price per mint
It increased by 10 cents. Take the increase and divide it by the original price: 10/5 = 2. Multiply this by 100 to get the percent increase: 2 x 100 = 200%.
(new price-old price)/old price=%changed. (20.5-16.4)/16.4=4.1/16.4=25% increase.
The postage rate in 2005 was 37 cents. It was raised from 34 cents in 2002. It remained at that price until it went to 39 cents in 2006.
50 cents
The postage rate in 1996 was 32 cents. It was raised from 29 cents in 1995. It went to 33 cents in 1999.
200 % increase. here's how it works out: old price; 5 c, new price 15 c, so increase in price 10 c, and so 5 inc in price = [inc in price / old price] x 100
The postage rate in the US in 2000 was 33 cents. It was raised from 32 cents in 1999. It went to 34 cents in 2001.
The postage rate in 1994 was 29 cents. It was raised from 25 cents in 1988. It went to 32 cents in 1995.
Three cents. The price was raised to 4 cents in July , 1958.
The postage rate in 1980 was 15 cents. It was raised from 13 cents in 1978. It remained at that price until it went to 18 1981.
At the start of 1988 first class postage was 22 cents. On April 3, it was raised to 25 cents.