Question 76980
you don't need to know (and don't have enough information to find) the values of p and n...you need to know their ratio


your equation was on track, but the 86 is the combined average...the sums of all the scores (which you did) DIVIDED by the number of scores (which you didn't do)


so...{{{86=(70p+92n)/(p+n)}}}...then 86p+86n=70p+92n...so 16p=6n... so {{{p/n=3/8}}}