If Roberto estimated that 5 out 8 automobiles have sun roofs. If he sold 72 automobiles, how many do not have sun roofs?

If you would like to know how many automobiles do not have sun roofs, you can calculate this using the following steps:

5 * 72 = x * 8

x = 5 * 72 / 8

x = 45 automobiles have sun roofs

72 - 45 = 27 automobiles don't have sun roofs

The correct result would be 27 automobiles.