In a dinner, 27% people chose salad. If 81 persons chose salad, how many people were there?

1 Answer
Dec 14, 2016

300 people.

Explanation:

Treat it as a proportion:

"people who chose salad" / "percent who chose salad" = "all people" / "100%"

Cross multiply:

"people who chose salad" * "100%" = "percent who chose salad" * "all people"

Put in the numbers:

81 * 1 = 0.27 * "all people"

81 / 0.27 = "all people"

300 = "all people"