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google search
Google search results:
1: https://brainly.in/question/13387365
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2: https://brainly.in/question/7167078
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3: https://www.quora.com/When-a-local-train-travels-at-a-speed-of-60-kmph-it-reaches-the-destination-on-time-When-the-same-train-travels-at-speed-of-50-kmph-it-reaches-its-destination-15-minutes-late-What-is-the-length-of-the-journey
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4: https://www.toppr.com/ask/en-af/question/if-a-train-runs-at-40-kmhr-it-reaches-its-destination-late-by-11-minutes/
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5: https://www.toppr.com/ask/en-us/question/a-train-travels-with-a-speed-of-60-km-h1-from-station-a-to-station/
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6: https://testbook.com/question-answer/if-a-train-runs-at-60-kmh-it-reaches-its-destina--5dbc3525f60d5d4453ecd402
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7: https://gmatclub.com/forum/time-speed-and-distance-simplified-150163.html
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8: https://edu.gcfglobal.org/en/algebra-topics/distance-word-problems/1/
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9: https://books.google.com/books?id=2vs-RNjRBFUC&pg=PA20&lpg=PA20&dq=When+a+local+train+travels+at+a+speed+of+60+km/h,+it+reaches+the+destination+on+time.+When+the+same+train+travels+at+speed+of+50+km/h,+it+reaches+its%0Adestination+15+minutes+late.+What+is+the+length+of+journey?%0AO+75+Km%0AO+50+Km%0AO+60+KM%0AO+none%0AO+Clear+Response&source=bl&ots=oKaO_MYBNr&sig=ACfU3U3Bjlp-pQdE8dfzoT7Y1qE5P83rQA&hl=en&sa=X&ved=2ahUKEwjDkuGQxpTzAhVjNn0KHYIhB6kQ6AF6BAgXEAM
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10: https://www.lsco.edu/learningcenter/distance-rate-time.pdf
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11: https://www.fhwa.dot.gov/publications/research/operations/tft/chap2.pdf
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