I need help I’ve been stuck for a while

Compare the following pair of numbers a and b in three ways. a. find the ratio of a to b. b. find the ratio of b to a. c. complete the sentence: a is percent of b. a=120 and b=340 a. the ratio of a to b is . b. the ratio of b to a is . c. a is nothing percent of b.

Percent increase and decrease. original number: 45 new number: 18

If p(a) = 0.70 and p(b) = 0.20, then a and b are independent events if