Belgium is a bilingual country, in which two languages are French and Dutch. Suppose that in a small town you discover that 51% of individuals can speak French, and 83% of individuals can speak Dutch. If 3% of individuals in the town speak neither French nor Dutch (they are foreiners) then what percent of individuals speak both French and Dutch?

The percent of individuals who speak both French and Dutch is 37%.

Step-by-step explanation:

We know that

51% of individuals can speak French

83% of individuals can speak Dutch

3% of individuals in the town speak neither French nor Dutch

We conclude that 100%-3% = 97% people speak either French or Dutch.

Now, 97%-83% = 14% people who speak only French.

Now we have 51%-14% = 37% are people who speak both French and Dutch.

Now 83%-37% = 46% people who speak only Dutch.

We have: 3%+14%+46%+37%=100%

The percent of individuals who speak both French and Dutch is 37%.