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google search
Google search results:
1: https://www.quora.com/A-boy-goes-to-school-with-the-speed-of-3-km-h-and-returns-with-the-speed-of-2-km-h-If-he-takes-5-hours-in-all-then-what-is-the-distance-in-kilometres-between-the-village-and-school
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2: https://www.gktoday.in/aptitude/a-boy-goes-to-his-school-from-his-house-at-a-speed-of-3-kmhr-and-returns-at-a-speed-of-2-kmhr-if-he-takes-5-hours-in-going-and-coming-the-distance-between-his-house-and-school-is/
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3: https://www.khanacademy.org/test-prep/mcat/physical-processes/speed-and-velocity/v/calculating-average-speed-and-velocity-edited
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4: https://kpu.pressbooks.pub/intermediatealgebraberg/chapter/8-8-rate-word-problems-speed-distance-and-time/
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5: https://www.doubtnut.com/question-answer/a-boy-goes-to-school-from-his-home-at-a-speed-of-4-km-hr-and-returns-at-a-speed-of-6km-hr-if-in-tota-54786187
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6: http://www.wallace.ccfaculty.org/book/1.10%20Distance.pdf
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7: https://www.algebra.com/algebra/homework/word/travel/Travel_Word_Problems.faq
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8: https://www.onlinemathlearning.com/distance-problems.html
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9: http://mathcentral.uregina.ca/qandq/topics/problem
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10: https://xdocs.tips/doc/tg-time-speed-distance-j08pe90yx7nv
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11: https://www.topperlearning.com/doubts-solutions/distance
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