1. Write a ratio for the situation in three ways, comparing the first quantity to the second quantity.

A zoo has 19 monkeys and 10 chimpanzees.
A. 19 to 10, 19:10, nineteen-tenths
B. 10 to 29, 10:29, Start Fraction 10/19
C. 19 to 29, 19:29, start fraction 19/29
D. 10 to 19, 10:19, Start Fraction 10/19