Question 774745
P = 42
2W + 2L = P
where L = 2W

2W + 2 (2W) = P
2W +4W = P
6W / 6 = 42 / 6
W = 7.....ANS.

AL' SOL'N :

2W = P - 2L
2W = 42 - 2 (2W)
2W / 2= (42 - 2 (W))/ 2
W = 21 - 2W
3W /3 = 21 / 3
W = 7.....ANS.