Grade 7 Math Quiz Questions and Answers - onlinemath4all When the new Lilly plants were planted, he had in all 48 plants in the garden.Find the number of Lilly plants he had originally. (A) 17 (B) 15 (C) 13. Solution : Let x be the number of lilly plants in his garden. Number of plants he buys = 2x. 2x + x - 3 = 48. 3x - 3 = 48. Add both sides by 3