Question

ir OP n 3 oQ eam eed 15. A boat travels from P to Q along the stream and from Q to P against the stream in 3 hours. If the speed of the boat in still water is 4 km/hr, then what is the distance between Pand Q? (1) 8 km (2) 6 km (3) 12 km (4) Data insufficient (5) None of these ar

SSC CGL

Maths

Solution

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let dist. ( =d ) ( frac{d}{4-x}+frac{d}{4+x}=3 ) ( Rightarrow ) data insupjeient ( b c z ) two varialle and one equation