Question

In Marks village 95% know English and 30 know French. What percent of people know both languages

Answer 1

25%

Explanation:

Draw a Venn diagram. One circle is 95%, and the other circle is 30%. Let's say x is the overlap. The total is 100%. If you add the 95 and 30 together, you'll be counting the overlap twice, so subtract one x.

95 + 30 − x = 100

x = 25