Two men start from opposite banks of a river . They meet 340 meters away from one of the banks on forward journey. After that they meet at 170 meters from the other bank of the river on their backward journey. What will be the width of the river (in meters)?  Select.
A) 750  B) 850  C) 900  D) 980  E) 950
let p,q are two persons then their speeds be a,b-&gt;m/hr   x----340----------------------|---(d-340)---------y   in forward journey   time taken by p=340/a;   time taken by q=d-340/b;   in forward journey, time taken by p=time taken by q   so 340/a=d-340/b   a/b=340/d-340------------(1)   after that they continue their journeyand reach other banks   now in backward journey,   x---------------(d-170)--------------------------|-----170------y   distance travelled by p from meet 1 to meet 2 = (d-340)+170   distance travelled by p from meet 1 to meet 2 =340+(d-170)   now time taken by p= time taken by q   (d-340)+170/a=340+(d-170)/b   (d-340)+170/340+(d-170)=a/b---------(2)   from 1&amp;2   340/(d-340)=(d-340)+170/340+(d-170)   340/(d-340)=d-170/d+170   340d+57800=d^2-340d-170d+57800   340d=d^2-510d   d^2-850d=0   d(d-850)=0   d=0 ord=850   so width of the river is 850   ANSWER:850
<result>B</result>
Two men start from opposite banks of a river . They meet 340 meters away from one of the banks on forward journey. After that they meet at 170 meters from the other bank of the river on their backward journey. What will be the width of the river (in meters)?