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In a class of 30 pupils, 18 take Social Studies and 17 take Technical
Drawing, 3 take neither. How many take both Social Studies and
Technical Drawing?​


Sagot :

Answer: 5

Step-by-step explanation:

18+17 = 35

35-30

5

Answer:

2

Step-by-step explanation:

18 + 17 + 3 = 28

30 - 28 = 2

if 18 take Social Studies and 17 take Technical  Drawing amd 3 take neither, we can assume the 2 left over are the pupils that take both