7
10
6
What is the area of the triangle shown above?

Area of triangle = 0.5* base * height

A = 0.5*6*10

A = 30

a. 16

b. 80

c. Blood type AB

Step-by-step explanation:

Given:

O = 45%

A = 40%

B = 11%

AB = 4%

Total number of donors = 145

a. No. of donors that had type B blood =

Type B blood donors ≈ 16

b. No. of blood donors without blood type O =

Those without blood type O ≈ 80

c. Find the number of people that had type AB:

Type AB = ≈ 6. This is less than 10 donors.

Therefore, blood type AB had less than 10 donors.