document.write( "Question 1019729: You are taking a course that has four tests. The first three tests are worth 100 points each, and the fourth test is worth 200 points. To get an A in the course, your must have an average of at last 90% on the four tests. Your scores on the first three tests were 87, 92, and 84. What must you score on the fourth test to get an A in the course? \n" ); document.write( "
Algebra.Com's Answer #635665 by solver91311(24713)\"\" \"About 
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\n" ); document.write( "\n" ); document.write( "In order to have an average of 90, your total points for the 4 tests must be 5 times 90, or 450 points. The reason you multiply by 5 is that the last test is worth double the first three, so it is the same as having 5 tests. You know the total points of the first three tests by simply adding them. Then subtract from 450 to know the score needed on the last one.\r
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\n" ); document.write( "\n" ); document.write( "John
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\n" ); document.write( "My calculator said it, I believe it, that settles it\r
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