Question

Cafeteria Meas Sow lo Graders i m may Meals \ Tu-sum ‘ ,, w ‘ Friday 1 )7 If the mean number of meals for an 5 days was 69, how many meals did the cafeteria sen on Friday A 5.1 : There are 5 Tamika's group 8 MA ~ made by the hangup on the test was 85 The stores “ s * students are shown c =

Answer 1

aritmetic average=sum of values / number of values
x=number of meals that the cafetery sold in Friday.

aritmetic average=69
number of days=5

69=(64+71+73+60+x) / 5
69=(268+x) / 5
69*5=268+x
268+x=345
x=345-268=77

Answer: C. 77 meals.