Well, there are 8 boys and the brother is one of them so 1 is 12.5% of 8 and out of 10 girls, there 1 is the sister and 1 out of 10 is 10%. Now we multiply the percentages to get the answer 1/80
In 6,289,002 the 6 is located in the millions place and 2 is next to it. Since 2 isn't bigger than 5, the 6 stays the same and the rest of the numbers to the right turn to zeros. So, 6,289,002 rounded to the nearest million is 6,000,000.
