3 math questions i doubt you can answer.

1. Lois got 27 problems right on a math test. If this is 90% of the test, how many problems were on the test??

2. Write 17/20 as a decimal and a percent.

3. 9 is what percent of 72?

1. 30 questions
2. 85%
3. 12.5%

imma just guess... #1= 30
lol.. thats all I can do

1. 30 questions
2.0.85 and 85%
3. 12.5% I think

0.85 and 85%
for #2?

1. 30
2. 0.85 and 85%
3. 12.5%

how did you guyss gett # 3
kuz everyone has different answerss

you divide 9 by 72 and it give you .125 which it 12.5% in percentage

#1 is 0.85 and #2 is 30
#3 is 12.5%
the way you get #3 is by a porportion you put a 9 like a fraction and x under the nine
then you do another porportion right next to is 72 out of 100 you cross multipy nine times a hundred equals nine hundred then you divide the product 9 and 100 to 72 and then youll get your answer for x get it (:

1. 30 Questions
2. .85, 85%
3. 12.5%

I am in advanced math in my private school