The price of oil recently went from $7.80 to$10.40 per case of quarts. find the ratio of the increase in price to the original price.

Hello,

When you are looking for a ratio, it is simply a fraction.

In the numerator, we will put the amount of the increase which is 10.4 - 7.80 = 2.6.
In the denominator, we will put the original price of $7.80.

This gives us the ration of 2.6/7.8 or just 0.33 if we divide.
We can say there was a 33% increase (or one-third).

I hope this helps, Good luck!
MrEquation

He is right i did this thing before

There is 240 red cars and there is 400 blue cars because 240/3=80 and 80*5=400