This is the concept of arithmetic: Given that Carol ran a total 1 3/4 miles for 5 days last week, the total distance covered was: Total distance=(distance per day)×(total number of days) =1 3/4×5 =7/4×5 =35/4 =8 3/4 miles Total distance ran this week is: Total distance=(2 1/4×4) =9/4x4 =9 miles therefore we conclude that the distance covered this week was greater than the distance covered last week.
b] this distance was greater by: difference=(distance covered this week)-(distance covered last week) =9-35/4 =(36-35)/4 =1/4 the answer is 1/4 miles
