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put this solution on YOUR website!We know that the sum of the scores from the p students is 70p, and the sum of the scores from the n students is 92n. Combining them,
We can split up the fraction two ways:
}{p+n} + \frac{22n}{p+n} = 86 \Rightarrow \frac{22n}{p+n} = 16)
}{p+n} - \frac{22p}{p+n} = 86 \Rightarrow \frac{22p}{p+n} = 6)
Hence, we are given
If we divide the first equation by the second, the 22's and the p+n's will cancel, and we will get
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