had dhvani scored 10 more marks in her mathematics test out of 30 marks 9 times these marks would have been the square of her actual marks how many marks did she got in the test
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Mark's dhavani scored = 10+
mathematics Mark's out of =30
9 times this Mark's =9x
10 + 30 - 9
10 + 21
31
ans : she scored 31 Mark's in test
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