9is what percent of 16?i'm giving out 17 points. i swear

Abox contains 1 plain pencil and 4 pens. a second box contains 5 color pencils and 5 crayons. one item from each box is chosen at random. what is the probability that a plain pencil from the first box and a color pencil from the second box are selected? write your answer as a fraction in simplest form.

In a class, there are 12 girls. if the ratio of boys to girls is 5: 4 how many boys are there in the class

If x is 6, then 7x= a. 13 b. 42 c. 42x d. 76