Answer :
To calculate the percent decrease in the gas price from $1.60/L to $1.509/L, subtract the new price from the old price, divide the result by the old price, and multiply by 100. The decrease is 5.69%. Therefore the correct option is b.
To calculate the percent decrease in the price of gas from November 2021 to March 2022, we use the formula for percent change which is:
Percent Change = ((Old Value - New Value) / Old Value) x 100%
In this case, the old value (November 2021) is $1.60/L and the new value (March 2022) is $1.509/L. The calculation is as follows:
Percent Decrease = (($1.60 - $1.509) / $1.60) x 100%
= ($0.091 / $1.60) x 100%
= 0.056875 x 100%
= 5.6875%
The answer, rounded to two decimal places, is 5.69%, which corresponds to option b).
