Can someone help me with this? (statistics) (Dot plot) you need to answer I, J,K, and L. Pls help ASAP

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.

The difference of three and the reciprocal of a number is equal to the quotient of 20 and the number. find the number.

Ineed with 8,9 and 10 love ya guysss