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google search
Google search results:
1: https://www.examveda.com/seats-for-mathematics-physics-and-biology-in-a-school-are-in-the-ratio-5-7-8-there-is-a-proposal-to-increase-these-seats-by-40-percent-50-percent-and-18807/
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2: https://www.toppr.com/ask/question/seats-for-mathematics-physics-and-biology-in-a-school-are-in-the-ratio-5/
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3: https://www.indiabix.com/aptitude/ratio-and-proportion/discussion-355
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4: https://www.quora.com/The-seats-in-an-Engineering-college-for-Computer-science-electronics-and-civil-are-in-the-ratio-of-5-7-8-There-is-a-proportion-to-increase-these-seats-by-40-50-and-75-respectively-What-will-be-the-ratio-of-increased
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5: https://www.quora.com/Seats-for-Mathematics-Physics-and-Biology-in-a-school-are-in-the-ratios-of-5-7-8-There-is-a-proposal-to-increase-these-seats-by-40-50-and-75-respectively-What-will-be-the-ratio-of-increased-seats
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6: https://www.competoid.com/quiz_answers/14-0-53557/Question_answers/
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7: https://www.montgomeryschoolsmd.org/departments/itv/TeacherGuides/MathCanTakeYouPlaces/MathCanTakeYouPlaces_TG.pdf
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8: https://www.nap.edu/read/15269/chapter/5
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9: https://www.sawaal.com/ratio-and-proportion-questions-and-answers/seats-for-mathematics-physics-and-biology-in-a-school-are-in-the-ratio-5-7-8-there-is-a-proposal-to-_1676
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10: https://www.math.utah.edu/~hacon/notes.pdf
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11: https://www.wikijob.co.uk/content/aptitude-tests/test-types/numerical-reasoning-tests
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