There are 10 question in a General Studies quiz.5 marks are given for each correct answer,
3 marks are deducted for each wrong answer and 1 mark is deducted for each question
given up.It is knoen that kenny does not have any wrong answer and bob has answered
all question. If the number of correct answers obtained by bob is 1 more than obtained by
Kenny,and bob has 2 less marks than Kenny in total,find the number of correct answers obtained by each of them.
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