The picture is too blurry to read.
15 = 3*5
64= 2*2*2*2*2*2
There are no common factors so the GCF is 1
Gary swam the fewest laps.
Hope this helps!
Make 37.5% into decimal form : Since it is being marked up, add 100% = 1.375
1.375 x 80
1.375
x 80
_________
0000
+11000
_________
110.000
80 marked up by 37.5% is 110.
