Answer
62 patients represented
A Venn diagram can help solve the problem by determining how many patients have A antigens as well as B antigens.
The main strategy in completing the Venn diagram is to work backwards and filling in the Venn diagram with what is given.
Work Step by Step
A Venn diagram can help solve the problem by determining how many patients have A antigens as well as B antigens.
The main strategy in completing the Venn diagram is to work backwards. We know 10 patients have both the A and B antigens, and we also know 25 patients have the A antigens.
$25 - 10 = 15$
15 patients have only A antigens (and no B antigens).
We know 10 patients have both the A and B antigens, and we also know 17 patients have the B antigens.
$17- 10 = 7$
7 patients have only B antigens (and no A antigens).
$15 + 10 + 7 + 30 = 62$
