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google search
Google search results:
1: https://www.toppr.com/ask/en-us/question/the-speed-of-a-boat-in-still-water-is-8/
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2: https://www.toppr.com/ask/en-us/question/the-speed-of-a-boat-in-still-water-is-15/
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3: https://www.tutorialspoint.com/quantitative_aptitude/aptitude_boats_streams_examples.htm
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4: http://www.umsl.edu/~defreeseca/intalg/ch8extra/rate.htm
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5: https://www.geeksforgeeks.org/problem-on-trains-boat-and-streams/
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6: https://themathpage.com/Alg/word-problems2-2.htm
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7: https://www.hitbullseye.com/Boat-and-Stream-Questions.php
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8: https://quizizz.com/admin/quiz/5f8e4fe373007c001b2c2395/boats-streams-2
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9: https://www.careerbless.com/aptitude/qa/boatsandstreamss2.php
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10: http://www.austincc.edu/mmcgraw/files_2425/Exam%201H%20Rev%20Ques.pdf
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11: https://books.google.com/books?id=I-x1DwAAQBAJ&pg=SL3-PA130&lpg=SL3-PA130&dq=A+boat+can+travel+with+the+speed+of+19+KMPH+in+still+water.+If+the+speed+of+the+stream+is+5+KMPH+Find+the+time+taken+by+the+boat+to+go+120+KM+downstream%0AO+1+hr%0AO+5+hr%0AO+7+hr%0AO+none%0A2+Clear+Response&source=bl&ots=nVqsmN7gCc&sig=ACfU3U0Sb7bOAtBYBFttW6bqQn-5fC4aug&hl=en&sa=X&ved=2ahUKEwjvla3H2JTzAhU6CjQIHcUBATwQ6AF6BAgTEAM
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