Answers by visitors named: Al B.

-0.5x < -15 divide both sides by -0.5 [-0.5x/-0.5] < [-15/-0.5] x < 30

Set it up like this; 2x + 3y = 24 x + y = 10 <--use this one to solve for y. so y = -x + 10 ... Now substitute (-x + 10) for y in the first equation..so 2x + 3(-x + 10) = 24 2x + (-3x) + 30 = 24 -x + 30 = 24 -x = 24-30 or -6 x = 6, y = 4 so 6 have 2 sails...