Mathematics, 19.01.2021 09:50, yudayang2012pa9u8p

A boat travelled 6km upstream at X km/h. How long did the journey take? When returning downstream, the speed of the boat was 2X km/h. How long did the return journey take? If the downstream journey took 15 min less than the upstream journey, form an equation for X and solve it.

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A boat travelled 6km upstream at X km/h. How long did the journey take? When returning downstream, t...