pls help Yolanda has finished 45% of the homework problems she was assigned. So far she has finished 27 problems. A. Write 45% as a rate per 100 and then reduce the fraction to lowest terms. B. How many problems was Yolanda assigned? Justify your answer. C. How many problems does Yolanda still have to do? Show your work.

pls help Yolanda has finished 45% of the homework problems she was assigned. So far she has finished 27 problems. A. Write 45% as a rate per 100 and then reduce the fraction to lowest terms. B. How many problems was Yolanda assigned? Justify your answer. C. How many problems does Yolanda still have to do?

A.  Write 45% as a rate per 100 and then reduce the fraction to lowest terms.

so, 45/100=9/20 lowest term after reducing the friction.(divide 45 and 100 by 5 then get 9 and 20)

B. How many problems was Yolanda assigned? 

let total problems Yolanda assigned = x

45% of x is 27

so, x* 45/100=27

x=27*100/45

x=2700/45

x=60 (total questions assigned)

C. How many problems does Yolanda still have to do?

total problems assigned= finished problems + unfinished problems

unfinished problems= total problems assigned - finished problems

                                      =60-27

                                      =33 

so, Yolanda still have to do 33 problems .