SOLUTION: raul scored 72% on a test and got 7 problems wrong. how many problems were on the test?
Algebra.Com
Question 936802: raul scored 72% on a test and got 7 problems wrong. how many problems were on the test?
Answer by lwsshak3(11628) (Show Source): You can put this solution on YOUR website!
raul scored 72% on a test and got 7 problems wrong. how many problems were on the test?
***
let x=number of problems on the test
x-7=number of problems raul got right
(x-7)/x=72%
x-7=.72x
x-.72x=7
.28x=7
x=7/.28=25
how many problems were on the test? 25
RELATED QUESTIONS
Mark had 14 problems wrong on his test. His score was 72% correct. How many problems were (answered by Theo)
Charles scored 75% on a test and got 6 questions wrong. How many questions were on the... (answered by rfer)
you missed 3 problems on a test and got 93%. How many problems were on the... (answered by TutorDelphia,solver91311)
If I scored 85% on my test and got 6 answers wrong, how many questions were on the... (answered by richard1234)
Dash scored 95% and Carrie 92% on a math test. If Carrie missed 18 problems on the test,... (answered by Boreal)
lydia got a 45% on the test. she got 45 problems corect. how many questions were on the... (answered by edjones,stanbon)
A student answered 72 problems on a test correctly and received a grade 80%. How many... (answered by richwmiller)
If there were 60 problems on a test and Betty got 90% of the problems correct, how many... (answered by mananth,acalgebra)
a student missed 10 problems on a test and recieved a grade of 82%. if all the problems... (answered by stanbon,rfer)