SOLUTION: John recently scored a 96 on a 100 point test. This score brought up his overall test average 3 percentage points to 81%. How many tests has John�s class taken in total if every te

Question 1056559: John recently scored a 96 on a 100 point test. This score brought up his overall test average 3 percentage points to 81%. How many tests has John�s class taken in total if every test was 100 points?
Answer by ankor@dixie-net.com(22740) (Show Source): You can put this solution on YOUR website!
John recently scored a 96 on a 100 point test.
This score brought up his overall test average 3 percentage points to 81%.
How many tests has John�s class taken in total if every test was 100 points?
:
Before the test his average was 3 points less or 78
let n = number test he took before the 96
= 81
78n + 96 = 81(n+1)
78n + 96 = 81n + 81
96 - 81 = 81n - 78n
15 = 3n
n = 15/3
n = 5 test before he got the 96
"How many tests has John�s class taken in total?"
6 tests
RELATED QUESTIONS
John recently scored a 96 on a 100-point test. This score brought his overall test... (answered by solver91311)

a student scored 71 out of 100 on a test. If the maximum score on the next test is also... (answered by JBarnum)

john score 45 out of 60 points on a test. calculate his percentage score. (answered by ewatrrr)

Jake's average score on the first for math tests is 83. On his first test he scored a 72... (answered by Cromlix)

Suppose Jim has 3 test this semester. His first test grade was a 95, However he scored an (answered by Alan3354)

A student has scored 93%, 89%, 72%, 80%, and 96% on the five math tests so far. What must (answered by richwmiller)

John 'a average score on 4 science tests was 91. If he scored 98 on the first test, 83 on (answered by ewatrrr)

a student scored 74 out of 100 on a test if the minimum score on the next test is also... (answered by stanbon)

A student scored 66, 81, and 96 on three algebra tests. What must he score on the fourth (answered by ikleyn)