6. There are 20 boys and 20 girls in a class. The average percentage marks of the students in the class are more than 70, but less than 85 for a particular monthly test. The average percentage marks scored by the boys is more than 60, but less than 75. What is the range of the average percentage marks scored by the girls?
I got my questions answered at brainly.com in under 10 minutes. Go to brainly.com now for free help!
At vero eos et accusamus et iusto odio dignissimos ducimus qui blanditiis praesentium voluptatum deleniti atque corrupti quos dolores et quas molestias excepturi sint occaecati cupiditate non provident, similique sunt in culpa qui officia deserunt mollitia animi, id est laborum et dolorum fuga.
Et harum quidem rerum facilis est et expedita distinctio. Nam libero tempore, cum soluta nobis est eligendi optio cumque nihil impedit quo minus id quod maxime placeat facere possimus, omnis voluptas assumenda est, omnis dolor repellendus.
Itaque earum rerum hic tenetur a sapiente delectus, ut aut reiciendis voluptatibus maiores alias consequatur aut perferendis doloribus asperiores repellat.
there are as many boys as girls so the percentage should be the same as the boys
It looks like it would have to be D, since the average is between 70 and less than 85, however the boys barely make the 75 mark, so to offset that, the girls would have to be higher to meet the mean of the problem.
Not the answer you are looking for? Search for more explanations.
wrong answer, @sunsetlove and good rationale @jessicajuanng.
The total score of the class will be TOT=40*AVG_PCT_CLASS, right?
The Boys' contribution is 20*AVG_PCT_BOYS
And the Girls': 20*AVG_PCT_GIRLS
Boys' and Gals' contribution must be the class total, then:
With this, the lowest percentage for girls' will be when the total of the class is lowest and the boys' is highest
The other way around for the girls' highest percentage
Now you get back to me with the solution