SOLUTION: Jane has finished her 4th test in English. Her earlier test results are 62%, 75% and 68%. What result does she need in her 4th test for an average of 75% please show working out

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Question 884843: Jane has finished her 4th test in English. Her earlier test results are 62%, 75% and 68%. What result does she need in her 4th test for an average of 75%
please show working out

Answer by geetha_rama(94) About Me  (Show Source):
You can put this solution on YOUR website!
Let x be the score in the new test
Hence
%2862%2B75%2B68%2Bx%29%2F4+=+75
Solve for x and that would be the score in the 4rth test