Joe runs 3 3/4 km.
Jan runs 8 1/2 km
About how much more doesn Jan run?
(8+ 1/2 ) - (3 + 3/4) =
(17/2) - (15/4) = get a common denominator = 4
(34/4) - (15/4) =
19/4 km = 4 + 3/4 km
+190 
