Question

in May the price of a gallon of gasoline was $4.00 in June the price went up to$4.20 What is the percent of increase in the cost of gasoline

Answer 1

5%

Explanation:

(4.2- 4.0)/4.0 * 100 = 5%

Answer 2

The percent of increase in the cost of gasoline, from May to June, is 5%.

Explanation:

We were given the following:

In May the price of gasoline was $4.00 and in June the price went up to $4.20.

We can determine the percent increase as follows:

percentage increase in gasoline(%) = ((final price-original price)/final price)*100

let y be the final percentage increase of gasoline.

`y=((4.2-4)/4.2)*100=5`

So the increase of gasoline as 5%

We can check this by multiplying the original prices by 5% and adding the original price.

`4*0.05+4=4.2`