Help me solve this for 50+ brainliest points plz plz answer correctly

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

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.

Can someone answer this question for me