Probability 63324

The shooter fired 100 times on the ground. He had four times more successful hits than failed hits. What was the probability of a hit in percent?

Correct answer:

p =  80 %

Step-by-step explanation:

n=100  a+b=n a=4b a+b=100 a=4b  a+b=100 a=4 b  a+b=100 a4b=0  Row2Row1Row2 a+b=100 5b=100  b=5100=20 a=100b=10020=80  a=80 b=20  p=100 na=100 10080=100100 80=1008000=80%



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