SOLUTION: On a recent quiz 6 students received course averaging 92 . The remaining students in the class received scores averaging 89 .if the quiz grades for the entire class averaged 90 .h

Question 325369: On a recent quiz 6 students received course averaging 92 . The remaining students in the class received scores averaging 89 .if the quiz grades for the entire class averaged 90 .how many students were in the class ?

Answer by checkley77(12844) (Show Source): You can put this solution on YOUR website!
6*92+89X=90(6+X)
552+89X=540+90X
89X-90X=540-552
-X=-12
X=12 STUDENTS AVERAGED 90 ON THE TESTS.
PROOF:
6*92+89*12=90(6+12)
552+1,068=90*18
1,620=1,620
RELATED QUESTIONS
In a class of 25 students, the average score is 84. Six students in the class each... (answered by josmiceli,kumareshperumal)

On a recent exam, 9/10 of the class received 70% or higher. Of the students receiving 70% (answered by solver91311)

In a class of 50 statistics students, students received an A. What fraction of the... (answered by ikleyn)

In a mathematics class, eighteen students received an A on the third test, which is 150%... (answered by JulietG)

In a mathematics class 60 students received an A on the third test, which is 125% of... (answered by rfer)

how do you work out this formula? The following data are exam grades of 10 students in a (answered by ewatrrr)

three-fourths of the students in Math 200 got a C on the last test, and one-fifth... (answered by josgarithmetic,stanbon,ikleyn,MathTherapy)

In a biology class, three-fourths of the students received a passing grade. If there are... (answered by rfer)

2/5 of the students in a class received an A on the test.(a) If there are 45 Students in... (answered by Boreal)