168k views
4 votes
alyssa answered 90% of her math test correctly. there were 50 questions on the test. how many questions did alyssa answer correctly?

User Laugh
by
5.9k points

2 Answers

1 vote

Since she answered 90% of her quiz correct, that means if she were to answer 10 questions, 9 would be correct. Lucky for us, 50 is a multiple of 10. If you multiply 10 by 5, you'd get 50. You would also need to multiply 9 by 5 as well. When you do this you'd get

45/50 correct. (divided them to make sure you get .90 if so, I'm right :)

User JaffaKetchup
by
6.1k points
5 votes
Since she answered 90% of her quiz correct, that means if she were to answer 10 questions, 9 would be correct. Lucky for us, 50 is a multiple of 10. If you multiply 10 by 5, you'd get 50. You would also need to multiply 9 by 5 as well. When you do this you'd get

45/50 correct. (divided them to make sure you get .90 if so, I'm right :)
User FiguringThisOut
by
6.3k points