Question

(3) Out of 100 persons in a group, 72 persons speak English and 43 persons speak French.
Each one out of 100 persons speak at least one language. Then how many speak only
English ? How many speak only French ? How many of them speak English and French
both . ?
please answer fast ​

Answer 1

Step-by-step explanation:

Below is an image of a venn diagram that can be used when solving this question.

To find the value of x, we must do the following:

(72 - x) + x + (43 - x) = 100

72 - x + x + 43 - x = 100

72 + 43 - x = 100

115 - x = 100

-x = 100 - 115

x = 15

Now, we have sub in the value of x to find how many people speak English and French.

Only English: 72 - x = 72 - 15 = 57

Only French: 43 - x = 43 - 15 = 28

Both English and French = x = 15