Kaitlin is participating in a 5-day cross country biking challenge. she biked for 55,67,56,and 49 miles on the first four days. how many miles does she need to bike on the last day so that her average (mean) is 55 miles per day?

The mean of a set of values is the sum of the data divided by the number of entries. So in this case:



Solve for x:

55 + 67 + 56 + 49 + x = 5(55)

227 + x = 275

x = 48

The answer is 48 miles.

Do the math. she originally had 50 dollars on her gift card and she had 12 dollars left on her gift card after she finished her shopping spree. if you subtract 50 minus 12 you get thirty eight dollars as your answer. so therefore, ciara spent 38 dollars total o