after four 100 point test, you have 365 points. how many points do you need to score on your next 100 point test to have a mean score of 92 points

Question

would a mean score of 92 points after 5 test be greater or less than your mean score after four test? 

 

your score on on each test is a whole number. is it possible that your mean score does not change after the fifth test? explain. 

Answer 1

365/4=91.25 is your mean score now

(365+x)/5=92

365+x=460

x=460-365

x=95 is what you need on the fifth test to have a mean score of 92

it's greater than before because 92>91.25

it's possible for your mean score not to change if your fifth test score is equal to the mean of the first four test scores