Answer:
the answer is 5.
Step-by-step explanation:
i did the math and i did it 15 different times and i only got 5 every time
hope i helped...
When calculating probability you need to remember that probability is:
something that you are observing divided by total number of participants.
The number you get is relative value(has value between 0 and 1) and if you want to get it in percentage (more clearly) just multiply it with 100.
In this case we are observing blood type B persons. Number of them is 165.
Total number of persons is 1500. Therefore our calculation looks like this:
165/1500 = 0.11 or the probability is 0.11*100=11%
Area = π r²
area of the required sector = (80/360) π * 15²
≈ 157.08
