Problem: a group of people participate in some curriculum , 30 of them practice yoga , 20 study cooking , 15 study weaving , 5 of them study cooking only , 8 of them study both the cooking and yoga , 5 of them participate all curriculums . how many people study both cooking and weaving ?
Rationale: "both cooking and weaving = 20 - ( 5 + 8 + 5 ) = 2 so , the correct answer is b ."
annotated_formula: subtract(subtract(subtract(20, 8), 5), 5)