Over a one week period in the summer, the price of a gallon of gas increased from $2.35 to $2.82. By what percent did the price of gas increase over that week?
A
10%

B
20%

C
30%

D
40%

Answer :

Answer:

B

Step-by-step explanation:

The price of gas increases from $2.35 to $2.82  or by $0.47 ($2.82 - $2.35 = $0.47).

The increase as a percentage of the original price is given by

($0.47/$2.35) x 100% = 20%

The price of gas increase over that week by 20%.

Percentage

Percentage are numbers or ratios which are being expressed in fraction of 100.

Percentage change = (change in price / original price) * 100%

Change in price = Final price - original price

From the question:

  • Change in price = 2.82 - 2.35 = 0.47

Percentage change = (0.47 / 2.35) * 100% = 20%

The price of gas increase over that week by 20%.

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