document.write( "Question 1009062: After 8 tests, Sally's average in biology is a 68. Her teacher said she could drop her 2 lowest tests grades (which were the same) Her new average is 72. What were the grades of the 2 lowest tests? \n" ); document.write( "
Algebra.Com's Answer #624643 by macston(5194)![]() ![]() You can put this solution on YOUR website! . \n" ); document.write( "Total points (8 tests) = number of tests x average \n" ); document.write( "Total points (8 tests) = 8 x 68 = 544 \n" ); document.write( ". \n" ); document.write( "Total points (6 tests) = number of tests x average \n" ); document.write( "Total points (6 tests) = 6 x 72 = 432 \n" ); document.write( ". \n" ); document.write( "Total points (two lowest tests) = 544 - 432 = 112 \n" ); document.write( "Since both low test scores were the same: \n" ); document.write( "Low test score = 112/2 = 56 \n" ); document.write( "Her two lowest test scores were 56. \n" ); document.write( " |