The speed of the stream is 16 2 3 % 16\frac{2}{3}% 16 3 2 % of the downstream speed of a boat. The boat covers 120 km 120 \text{ km} 120 km upstream...

Banking SBI PO Prelims Medium Simplification/ Approximation MCQ

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The speed of the stream is $16\frac{2}{3}%$ of the downstream speed of a boat. The boat covers $120 \text{ km}$ upstream in $5$ hours. If the boat covers $D - 3$ km downstream and $D + 30$ km at the speed of the boat in still water in $5.5$ hours, find the value of $D$ .

Options

$55$

$75$

$80$

$60$

$45$

boat and streamspeeddistancetimealgebra

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The speed of the stream is 16 2 3 % 16\frac{2}{3}% 16 3 2 ​ % of the downstream speed of a boat. The boat covers 120 km 120 \text{ km} 120 km upstream...

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The speed of the stream is 16 2 3 % 16\frac{2}{3}% 16 3 2 % of the downstream speed of a boat. The boat covers 120 km 120 \text{ km} 120 km upstream...