No. Four times five is twenty, so if Andrea has five five dollar bills, she can afford the tennis shoes. <span />
14 20
---- = ----- cross multiply
3x x-5
14(x-5) = 3x (20)
14x - 70 = 60x
-14x -14x
-70 = 36x
/36 /36
-70/36 = x
or
-35/18 = x
The second one is correct