Question

Jon's test grades are 67, 75, 73 and 69. what does he need to make on his next test to have a 73 average?

Answer 1

Answer:

81

Step-by-step explanation:

73= (67+75+73+69+x)/5

73x5= 67+75+73+69+x

365=67+75+73+69+x

365-67-75-73-69=x

x= 81

Answer 2

Answer:

81

Step-by-step explanation:

average= sum of observation/total number of observation

so, 67+75+73+69+x/5=73

284+x = 73*5

x=365-284

x = 81