records kept by a dietician at a cafeteria show the following weekly consumption of milk (in gallons).
milk in gallons 200, 205, 210, 215, 220, 225, 230, 235, 240
number of weeks 3, 4, 6, 5, 4, 3, 2, 2, 1
find the average number of gallons of milk consumed per week.

Question

records kept by a dietician at a cafeteria show the following weekly consumption of milk (in gallons).
milk in gallons 200, 205, 210, 215, 220, 225, 230, 235, 240
number of weeks 3, 4, 6, 5, 4, 3, 2, 2, 1
find the average number of gallons of milk consumed per week.

welshfella · Answer

average = total volume consumed  / number of weeks

so add up the first list
add up the second
then divide

brooklynriojas1 · Answer

i did that already, it was wrong.

brooklynriojas1 · Answer

i found that you have to multiply the number of gallons times the number of weeks and add the products up, then divide by the total number of weeks to get an answer of 216.

welshfella · Answer

Oh I see  I misread the question. 
The first numbers are the weekly consumptions

welshfella · Answer

yea  its 6480 / 30 = 216