Question

the ratio to the number of adults to students at the prom has to 1:10 last year there were 477 more students than adults at the prom if the school is expecting the same attendance this year how many adults have to attend the prom?

Answer 1

1 adult per 10 students totally of 477 students
477/10 = 47.7 adult
can't have a .7 of an adult so round up or down to 47/48