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Ms. Watson's class read for a total
of 450 hours this month. Mr. Gerk's
class read two-thirds the number of
hours read by Ms. Watson's class.
Miss Rupp's class read twice the
number of hours read by Mr. Gerk's
class. If there were a total of
90 students in these three
classrooms, what was the average
number of hours read per student?

Respuesta :

itshugoooc
since ms. watson’s class read for a total of 450 hours, we can calculate the amount of hours the mr gerk’s class read by: 450*2/3, which equals 300. Then we know Miss rupp’s class read twice the number of hours read by mr. gerk’s class so that’s 600 hours.
finally in order to calculate the average number of hours: (450+300+600) /90=15