Joe's electric made 16 customer calls last week and 22 calls this week. How many calls must be made next week in order to maintain an average of at least 21 calls for the three week period?
My answer was at least 19 calls must be made to maintain an average of 21 calls is this correct?
3 * 21 = 63 calls in 3 weeks
16 + 22 = 38 calls made in 2 weeks
63 - 38 = 25 calls next week
Check it out: 16 + 22 + 25 = 63
63/3 = 21
thank you ms. sue
You're welcome.
To find out how many calls must be made next week to maintain an average of at least 21 calls for the three-week period, we can use the following steps:
1. Calculate the total number of calls made in the first two weeks. In this case, Joe's electric made 16 calls last week and 22 calls this week.
Total calls in the first two weeks = 16 + 22 = 38 calls.
2. Determine the minimum number of calls needed over the three-week period to maintain an average of at least 21 calls.
To find the minimum number of calls needed, we can multiply the average (21) by the total number of weeks (3), and then subtract the total number of calls made in the first two weeks.
Minimum number of calls needed = (Average calls per week) x (Total number of weeks) - Total calls in the first two weeks
= 21 x 3 - 38
= 63 - 38
= 25 calls.
Therefore, to maintain an average of at least 21 calls over the three-week period, Joe's electric needs to make at least 25 calls in the next week, not 19.