Problema Solution
The teacher gave their class average test scores for the whole semester. They had done 4 tests and Sam’s average was 76%. She had a mark of 83% for statistics, 72% for geometry, and 91 for Measurements but had forgotten what she got for Algebra. What did she get for algebra
Answer provided by our tutors
let
x be the score that Sam got for Algebra
the average score from the 4 tests is (83 + 72 + 91 + x)/4 that is
(83 + 72 + 91 + x)/4 = 76
by solving the equation we find
x = 56%
Sam had a mark of 56% for Algebra.