Question

In 1992, Jason bought a gallon of gas for $1.20. Yesterday, he bought a gallon of gas for $2.22. What is the percentage increase of the price of a gallon of gas from 1992 to yesterday? If necessary, round to the nearest tenth of a percent.

A.
54.1%
B.
15%
C.
45.9%
D.
85%

Answer 1

A.

Explanation:

(I'm not sure if this is right so let me know)

If you divide 1.20 by 2.22 it comes out as 0.5405. If you take this and round, you get 0.541. After this, to make it a percentage, you move the decimal 2 places left, which comes out as 54.1%

Hope this helps!

Answer 2

What percentage of 1.16 is 2.22? The amount over 100% will be the increase:

2.22 = (x/100)(1.16)

x = 2.22(100)/1.16

x = 191.4%

The increase is 91.4%