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Biology 13 Online
OpenStudy (anonymous):

In a group of 1,500 people, 585 have blood type A, 165 have blood type B, 690 have blood type O, and 60 have blood type AB. What is the probability that a person chosen at random from this group has type B blood? P(B) = 4% P(B) = 11% P(B) = 39% P(B) = 46%

OpenStudy (abhisar):

Its more like a simple mathematics question !

OpenStudy (abhisar):

got it ?

OpenStudy (anonymous):

honestly not really

OpenStudy (abhisar):

ohkay what part is giving uh trouble ?

OpenStudy (abhisar):

Ohkay lets re do it with an example

OpenStudy (abhisar):

Suppose there are 10 balls given to u, 4 are red, 3 are black and 3 are white

OpenStudy (anonymous):

okay

OpenStudy (abhisar):

Now if i ask what is the probably of finding red ball then how will we find it ?

OpenStudy (anonymous):

4/10 right?

OpenStudy (abhisar):

yes, now lets tackle our main question similarly

OpenStudy (anonymous):

i think the problem is the percent with me... ive never been good with percentage

OpenStudy (abhisar):

It's very easy. just do waht u did and nultiply it with 100 (for getting %)

OpenStudy (abhisar):

can u now ?

OpenStudy (anonymous):

i did 165/1500 is that the right start or wrong directon?

OpenStudy (abhisar):

correct, now multiply it with 100

OpenStudy (anonymous):

i think its 4%?

OpenStudy (abhisar):

165/1500 = 0.11

OpenStudy (abhisar):

Now, 0.11 * 100 = 11%

OpenStudy (abhisar):

got it ?

OpenStudy (anonymous):

yes, thank you!

OpenStudy (abhisar):

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OpenStudy (anonymous):

((((:

OpenStudy (anonymous):

11% is the answer, just took the test :))

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