Question

I need help with these two question

Answer 1

Answer:

See answers below.

Step-by-step explanation:

1a. Only maths will be 50-13 = 37

2a. Either math or biology = only Math + only Bio + both math & bio = 37 + (29-13) + 13 = 66

So neither math nor bio = All - either math or bio = 70 - 66 = 4.

2. No of people signed for both = no of people signed for Canoeing + No of people signed up for Orienteering - no of people signed up for both = 43 + 37 - 57 = 23.

So no of people signed up for only one = total no - no of people signed up for both = 57 - 23 = 34