how many lawn chairs does Karen have
Karen has X chairs Jenny has 2X chairs Rico has X+3 chairs So Karen, Jenny and Rico has X + 2X + X+3 = 4X + 3 chairs but we know that alltogheter they have 31 chairs 4X + 3 = 31 take 3 away from both sides 4X = 28 divide by 4 both sides X = 7 So Karen has 7 chairs, Jenny has 14 chairs and Rico has 10 chairs. 7 + 14 + 10 = 31