in my 6th grade science class we had a huge thing where we all got a tootsie pop and had to see how many licks it would take to get to the center. my teacher took all our numbers and found the class average and then took all her periods and got the average and 372 was our average lol.
It's 70 because first you have multiply for Cindy's words 65×7=455 then multiple David's 75 word times 7 and you get 525. Lastly, You subtract both of their totals and get 70
