5. The price of gasoline rose from $2.78 to $3.34. What was the percent of increase?

Question

math is ahrd for me and i need this answer

Answer 1

334/278 = about 1.2 = 120%, but the increase is just 20%. 100% means 0% change.

(334-268)/278 = 66/278 = 33/139 = about 0.2 = 20% increase

You can do this with $ signs and decimal points, but they all cancel out.