Question

In the last several weeks, 18 days saw rain and 29 days saw high winds. in the same time period 7 days saw both rain and high winds. How many days saw either rain or high winds

Answer 1

Answer:

40 days saw either rain or high winds

Step-by-step explanation:

We solve this question using Venn sets.

I am going to say that:

Set A: Rain

Set B: High winds.

18 days saw rain

This means that $A = 18$

29 days saw high winds

This means that $B = 29$

7 days saw both rain and high winds.

This means that $A \cap B = 7$

How many days saw either rain or high winds?

This is

$A \cup B = A + B - A \cap B$

Sp

$A \cup B = 18 + 29 - 7 = 40$

40 days saw either rain or high winds