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Nidhi scores 62 marks in Mathematics, 70 in English, 74 in Science. What should be her score in Social Sciences so that she gets an overall 68%?
Given,
Maths=62,English=70,Science=74
Overall percentage=$$68\%$$
Let maximum marks be=100
and marks of Social Science=x
Percentage=$$\frac{Sum\ of\ marks\ obtained}{Total\ Marks}\times\ 100$$
$$68=\frac{62+70+74+x}{400}\times\ 100$$
x=66
Thus,
Marks of Social Science=66
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