Question

50 people speak French 20 speak Spanish and 10 speak both Spanish and French how many speak at least one of these two language

Answer 1

Below is the answer ! The way i know

Answer 2

60 People

Let F be the set of people who speak French.

Let S be the set of people who speak Spanish.

Given:

n(F) = 50 People

n(S) = 20 People

n(F ⋂ S) = 10 People

To Find:

The number of people that speak at least one of the two languages.

n(F U S)

Calculating:

The formula that we use to calculate the union of sets:

n(F U S) = n(F) + n(S) - n(F ⋂ S)

Substituting all the values that are known to us in this formula we get:

n(F U S) = 50 + 20 - 10

n(F U S) = 50 + 10

n(F U S) = 60

Therefore, the number of people in the committee that speak at least one of these two languages is 60 People.