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put this solution on YOUR website!Let "w" be the watch & "p" be the pen representations.
By the given data:
2w + 4p = 586 ------------------> Arnold
1w + 3p = 361 ------------------> Smith
Solving both of the equations simultaneously, we find the value of the pen & the watch.
2w + 4p = 586
2w + 6p = 722 multiplied by (2)
================ Subtracting them we get:
- 2p = -136
==> p = 68
So, by back substitution we can find the value of w, watches.
1w + 3(68) = 361
1w = 361 - 204
w = 157
thus the cost of one pen is $68 and one watch is $157
thus the solution.
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