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Write a word problem which can represent an algebraic expression mathematically and solve it.

am quadratic equation ki word problem du ya fir bi quadratic equation ki word problem du ??



On an algebra test, the highest grade was 42 points higher than the lowest grade. The sum of the two grades was 138. Find the lowest grade.

soln. let the lowest grade be = l

then acc

 (l+42)+l =138

 2l +42 =138

2l =96

l = 48.

lowest grade =48

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