Peter spent an average of $4.50 per day from Monday to Saturday. He spent $5.20 on Sunday. What was the average amount of money he spent per day from Monday to Sunday?

Question

1950 views around the world

You can reuse this answer
Creative Commons License

Answer 1 · 2017-06-08T20:04:29

See a solution process below:

The average is calculated using the formula:

#A = s/i#

Where:

#A# is the average - what we are being asked to solve for.

#s# is the sum of the values of the items.

For this problem:
#s = ($4.50 xx 6) + $5.20#
#s = $27.00 + $5.20#
#s = $32.20#

#i# is the number of items being average - 7 for this problem. Monday to Saturday is 6 plus Sunday makes 7

Substituting and calculating #A# gives:

#A = ($32.20)/7#

#A = $4.60#

Peter spent an average of $4.60 Monday to Sunday

Answer 2 · 2017-06-08T20:29:59

#$4.60#

So, he spends #$4.50# from Monday to Saturday, the total amount he spends is

#$4.50 xx "6 days" = $27#

#$27 + $5.20 "(that he spends on Sunday)" = $32.2 #
To find the average

#($32.2)/(7("number of days in a week")) = $4.60#

The average money he spends is #$4.60#.

I hope this helps