The ratio of the speeds of boat A and boat B in still water is 4 : 5 4:5 4 : 5 respectively. The speed of the current is 15 k m 15 km 15 km . Boat A t...

Banking SBI PO Prelims Medium Simplification/ Approximation MCQ

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The ratio of the speeds of boat A and boat B in still water is $4:5$ respectively. The speed of the current is $15 km$ . Boat A takes $4.5$ hours to travel $180km$ downstream. What is the time taken by boat B to cover $120 km$ upstream?

Options

$20 \text{ hours}$

$36 \text{ hours}$

$24 \text{ hours}$

$12 \text{ hours}$

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The ratio of the speeds of boat A and boat B in still water is 4 : 5 4:5 4 : 5 respectively. The speed of the current is 15 k m 15 km 15 km . Boat A t...

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