Pauline planted in total 3 * 5 = <<3*5=15>>15 tomatoes.
Pauline also planted 5 * 4 = <<5*4=20>>20 cucumbers.
In total Pauline planted 15 + 20 + 30 = <<15+20+30=65>>65 different vegetables.
The whole garden can be filled up with 10 * 15 = <<10*15=150>>150 different vegetables.
So Pauline could plant 150 - 65 = <<150-65=85>>85 more vegetables in her garden.
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