Johnny has a jar of marbles with the following number of colored marbles in it.
If Johnny randomly pulls out a marble from the jar, what is the is the probability that he will pull out a red marble?

A. 1/4
B.1/5
C.1/3
D.1/6

Dexter read 11 science fiction books and 5 history books. lena read 9 science fiction books and 4 history books. compare the students’ ratios of science fiction books to history books. 1. determine the ratios’ form:    science fiction books to history books 2. write the ratios as fractions:    dexter: 115; lena: 94 3. rewrite with a common denominator. 4. compare. 5. answer the question. determine which shows the correct comparison of the ratios for this problem.