Question

At a slumber party, 1/3 of the girls painted their fingernails. Out of those girls, 1/6 of them chose red as their nail polish color. What fraction of girls at the party have red nails

Answer 1

1/18 because 1/6 of 1/3 of the girls painted their nail red and 1/6 of 1/3 is 1/6*1/3 or 1/18.