Carol noticed that 7/10 of the children playing soccer were girls. which statement could be correct?

a.
there were 28 girls and 12 boys playing soccer.

b.
there were 63 girls and 45 boys playing soccer.

c.
thirty-five of the forty children playing soccer were girls.

d.
forty-nine of the fifty-six children playing soccer were girls.

Carol noticed that 7/10 of the children playing soccer were girls. Which statement could be correct?
A. There were 28 girls and 12 boys playing soccer.
28 : x% = 40 (the total number of children) : 100%
40x = 28 * 100
40x = 2800
x = 2800 / 40
x = 70%
There were 70% of girls in the class.
70 / 100 = 0.7
7/ 10 = 0.7
This is why A is the correct answer.

The correct answer is -4