document.write( "Question 266590: please help me solve for x and y\r
\n" ); document.write( "\n" ); document.write( "it takes bob the boy scout 10 hours to paddle upstream {against the current} a distance 15 miles. when he turns around he finds it only takes him 5 hour to paddle 22.5 miles with the current.how fast is bob's boat going in stilll water and what is the speed of the curent of the river?\r
\n" ); document.write( "\n" ); document.write( "please solve this problem right now!!!! thank you \n" ); document.write( "
Algebra.Com's Answer #195882 by drk(1908)\"\" \"About 
You can put this solution on YOUR website!
This is a RTD problem. Here is a table based on given information
\n" ); document.write( "paddle . . . . . . . . .rate . . . . . . . . . time . . . . . . . . . distance
\n" ); document.write( "up stream . . . . . .r - c . . . . . . . . . . .10 . . . . . . . . . . 10r - 10c =15
\n" ); document.write( "down stream . . . .r + c . . . . . . . . . . .5 . . . . . . . . . . .5r + 5c = 22.5
\n" ); document.write( "totals . . . . . . . . .
\n" ); document.write( "Looking at column 3 we get
\n" ); document.write( "(i) 10r - 10c = 15
\n" ); document.write( "(ii) 5r + 5c = 22.5
\n" ); document.write( "multiply (ii) by 2 to get
\n" ); document.write( "(iii) 10r + 10c = 45
\n" ); document.write( "add (i) and (iii) to get
\n" ); document.write( "(iv) 15r = 60
\n" ); document.write( "divide to get
\n" ); document.write( "(v) r = 4
\n" ); document.write( "This means that the current is
\n" ); document.write( "c = 2.5 \n" ); document.write( "
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