Kelly is reconstructing her expenses for the past two weeks. here are the records of her expenses:

transaction
cost ($)
camera
164
film
21
hiking boots
113
first aid kit
12
radio
27
overcoat
55
tent
86
kelly’s bank statement says that she has an ending balance of $349. what is kelly’s starting balance?
a. $478
b. $388
c. $827
d. $607

To get the starting balance, we will need the to add the total expenses and the ending balance
Total expense = $164+$21+$113+$12+$27+$55+$86
                         = $478
Starting balance= total expense + ending balance
ending balance= $349
                           =$478+$349
                           =$827
Kelly's starting balance would be letter C. $827
                           

How many groups are there?