Question

In a certain school,course grade range from 0 to 100. Adriana took 4 courses and her average course grade was 90. Roberto took 5 courses. If both students have the same sum of course grade, what was Roberto's

average

Answer 1

The total sum of Adriana’s grades are:

sum of grades = 4 * 90

sum of grades = 360

If Adriana and Roberto has similar total sum, therefore the average of Roberto’s grades is:

Roberto average = 360 / 5 = 72

Answer:

72