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The math circle is attended by h = 10 boys and k = 5 girls.
a) How many students go to the ring?
b) How many students are in the ring if five girls and three boys are missing

Correct answer:

n =  15
b =  7

Step-by-step explanation:

$$\begin{gathered} h=10 \\ k=5 \\ n=h+k=10+5=15 \end{gathered}$$

$b=n-5-3=15-5-3=7$

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