Girl to Boys
3 : 10
12 : 40
12 + 40 = 52
40 boys
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In this case, the complement would be selecting a number less than or equal to 7; the probability of this occurring is 
You have to convert the percent into a decimal before you convert it into a fraction then you simplify the fraction.
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Answer:
a
Step-by-step explanation:
Answer:
2:1
Step-by-step explanation:
w:x = 4:6
y:x = 1:3
if w = 4 and x = 6, y = 1/3x = 2
If w = 4 and y = 2, then the ratio is;
w:y = 2:1