Mason counted an average of 18 birds at his bird feeder each day for 20 days. Rosa counted an averge of 21 birds at her bird feeder each day for 16 days. How many more birds did Mson count at his feeder than Rosa couted at hers?

Mason counted 24 more birds at his feeder than Rosa counted at hers

Step-by-step explanation:

Average = Total or sum/number of items

Therefore, Total or sum = Average * number of items

For Mason,

An average of 18 birds in 20 day is equivalent to a total of

Total birds = 18 * 20

= 360 birds

For Rosa,

An average of 21 birds each day for 21 days is equivalent to a total of

Total birds = 21 * 16

= 336 birds

Difference between the total number of birds for Mason and Rosa

= 360 - 336

= 24 birds