84 * 5 = 420 total points needed
How many points does she have now?
How many more does she need?
Gini's test scores in Biology 30 are 95, 82, 76, and 88. What score must she get on the fifth test in order to achieve an average of 84 on all five tests?
2 answers
Average = Sum of each test's marks/Number of tests
Taking x as the score on the fifth test,
=> 84 = (95+82+76+88+x)/5
=> 420 = 95+82+76+88+x
=> 420 = 341 + x
=> x = 79
Taking x as the score on the fifth test,
=> 84 = (95+82+76+88+x)/5
=> 420 = 95+82+76+88+x
=> 420 = 341 + x
=> x = 79
1 answer