The price of a gallon of gas has dropped to $2.81 today. Yesterday it was $2.86. How would I find the percentage decrease in nearest tenth of a percent?
2007-02-03 06:55:09 · 5 answers · asked by congosammy 1 in Science & Mathematics ➔ Mathematics
take the final price subtract initial price and then divided by intial price
(2.81 - 2.86) / 2.86 = -0.1748
1.7% (the negative means decrease)
2007-02-03 07:02:05 · answer #1 · answered by 7 · 1⤊ 0⤋
To find the percentage decrease, simply divide the decrease by what the price was yesterday. The decrease is 5¢ per gallon.
.05 ÷ 2.86 = .0174... = 1.74% = 1.7% decrease rounded to the nearest tenth of a percent.
2007-02-03 15:28:55 · answer #2 · answered by Marv 2 · 0⤊ 0⤋
$2.86 - $2.81 = $.05
Decrease in cents.
($.05 / $2.86) (100)
(Decrease / Yesterday Price) X 100 gives you the percent decrease.
= 1.74825...%
Rounding to the nearest tenth of a percent means keeping only one number to the right of the decimal point.
Answer = 1.7%
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2007-02-03 15:12:52 · answer #3 · answered by H. Scot 4 · 0⤊ 0⤋
($2.81 - $2.86) / $2.86
2007-02-03 15:00:39 · answer #4 · answered by Pikajane 3 · 0⤊ 0⤋
(Yesterday - Today)/Yesterday
2007-02-03 14:59:08 · answer #5 · answered by Mathematica 7 · 0⤊ 0⤋