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Marat540 [252]
4 years ago
9

The price of a gallon of unleaded gas was $2.85 yesterday. Today, the price fell to $2.79. Find the percentage decrease. Round y

our answer to the nearest tenth of a percent.
Also this is for twenty points.
Mathematics
2 answers:
andrew-mc [135]4 years ago
7 0

Answer:

Percentage rounded to nearest tenth:

<h2> 2.1%</h2>

Step-by-step explanation:

Let P represent the decrease percentage

2.85 - 2.85×(P÷100) = 2.79

then

2.85×(1 - (P÷100)) = 2.79

then

2.85×(100 - P)÷100 = 2.79

then

100 - P = (2.79×100)÷2.85 = 97.894736842105

then

P = 100-97.894736842105 = 2.105263157895

alukav5142 [94]4 years ago
3 0

Step-by-step explanation:

2.85-2.79 is 0.06

0.06/2.85 X 100 is 2.1% decrease

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