Question

Molly walked 3.45 miles on a hike. Her sister walked 1.23 miles. Her brother walked 0.85 miles. How much farther did Molly walk than her brother and sister combined? 0.38 miles 1.37 miles 2.22 miles 5.53 miles

Answer 1

Molly's 3.45 mi - sisters 1.23 - brothers .85 
3.45- 1.23= 2.22
2.22-.85=1.37
molly walked 1.37 miles farther

Answer 2

1.23+0.85 = 2.08 miles
3.45-2.08= 1.37 miles, which is the answer