Leslie is taking a math class. This is how the class is graded. Test 1 13% Test 2 13% Test 3 13% Lab 1 10% Lab 2 10% Lab 3 10% Lab 4 10% Final Exam 21%
She received a 93% on Lab 1, 70% on Test 1, 29% on Lab 2, and 50% on Test 2 What must she receive on Lab 3,4,Test #3 and the Final exam in order to have an 80% for the class.
$$(13\%*70\%) +(13\%*50\%) +(13\%*x) +(10\%*93\%) +(10\%*29\%) +(10\%*x) +(10\%*x) +(21\%*x) = 80\%$$
$$27.8\% + 54\%*x = 80\%$$ $$54\%*x = 52.2\% $$ $$x = 96.67\% $$