This is not correct. You might think you are "on a roll" but the probability of heads on any toss is just as likely as the probability of tails because each coin toss is an independent event, meaning, two events related in such a way that knowing about the occurrence of one event has no effect on the probability of the the other event. This would hold true if you have tossed these 15 heads and you believe that tails "are due". It is an independent event.
6.808 is the correct answer
Hope this helped you
So... if we take 22.8 to be the 100%, then it dropped to 12.1,
the difference in between being 22.8 - 12.1 or 10.7 decrease
so... what is 10.7 in percentage, of 22.8?
well

solve for "x"
3x-15 is 91919919198273772727272882 xxx
Let a and c be adults and children, respectively. Then:
a+c=500
5a+2c=1540
Solve for a and c
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