Brian recorded the amount of money he spent over the last 5 days. He knows that the average amount of money he spent was $25.72. On four of the Five days, Brian spent $15.50, $28.41, $31.02, and $10.66. Determine how much Brian spent on the fifth day.
Hello! In order to figure out how much Brian spent on the fifth day, we need to use the average amount ($25.72) and the totals from the other four days.
An average is calculated by adding up all individual units (in this case the 5 daily values) and then dividing by the total number of units (in this case, 5). For now, let's call the amount that Brian spent on day 5, “x”. If we do that, we can set up our formula like this:
Average = (Day 1 + Day 2 + Day 3 + Day 4 + Day 5)/5
$25.72 = (15.50 + 28.41 + 31.02 + 10.66 + x)/5
Simplifying this equation, we get:
25.72 = (89.59 + x)/5
Multiply both sides by 5:
$128.60 = $85.59 + x
$43.01 = x
Therefore, on the fifth day, Brian spent $43.01.
Hope that helps!
To determine how much Brian spent on the fifth day, we need to use the information given.
We know that the average amount Brian spent over the last 5 days was $25.72. To find the total amount Brian spent over the 5 days, we need to multiply the average by the number of days:
$25.72 * 5 = $128.60
Now, we know that Brian spent $15.50, $28.41, $31.02, and $10.66 on four of the days. We can subtract these amounts from the total to find the amount he spent on the fifth day:
$128.60 - $15.50 - $28.41 - $31.02 - $10.66 = $43.01
Therefore, Brian spent $43.01 on the fifth day.
To determine how much Brian spent on the fifth day, we can use the average amount of money he spent over the last 5 days.
The average amount of money Brian spent over the 5 days is given as $25.72.
To find out the total amount Brian spent over the 5 days, we multiply the average amount by the number of days:
Total amount = Average amount * Number of days
Total amount = $25.72 * 5 = $128.60
Now, if we subtract the amount Brian spent on the four known days ($15.50 + $28.41 + $31.02 + $10.66 = $85.59) from the total amount he spent over the 5 days ($128.60), we can find out the amount he spent on the fifth day:
Amount spent on the fifth day = Total amount - Amount spent on four known days
Amount spent on the fifth day = $128.60 - $85.59 = $43.01
Therefore, Brian spent $43.01 on the fifth day.