The ratio of time taken by a boat to cover a certain distance downstream to the time taken upstream is 2 : 3 2 : 3 2 : 3 . The boat covers 108 e x t k...

Banking SBI PO Prelims Medium Simplification/ Approximation MCQ

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The ratio of time taken by a boat to cover a certain distance downstream to the time taken upstream is $2 : 3$ . The boat covers $108 ext{ km}$ downstream in $d$ hours and $120 ext{ km}$ upstream in $d + 4$ hours. What is the upstream speed of the boat in km/hr?

Options

$18$

$15$

$21$

$12$

$24$

boat and streamtime and distanceratiospeed

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The ratio of time taken by a boat to cover a certain distance downstream to the time taken upstream is 2 : 3 2 : 3 2 : 3 . The boat covers 108 e x t k...

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