math
posted by tas .
mrs. karson's music class includes both 6th and seventh graders. the ratio's of 6th graders to students ine the class is 4:7. there are 9 seventh graders in the music class how many students sre in the class?

six graders  4x
7th graders  7x
x/y = 4/7
given: 7x= 9
x = 9/7
uh, uh, looks like we have some "parttime students"
Question is flawed, number of students must be whole numbers.
Check your typing.