Answer
Carlos biked further on Sunday than on Saturday.
He biked a further 1.911 miles on Sunday than on Saturday.
Step-by-step explanation
We are told that Carlos biked (139/8) miles on Saturday and then he biked (135/7) miles on Sunday.
We are then asked to determine which day he biked further and by how much?
To do this, we convert the number of miles given into decimals.
For Saturday,
(139/8) miles = 17.375 miles
For Sunday
(135/7) miles = 19.286 miles
Comparing the distance that Carlos biked on Saturday and Sunday, we can see that 17.375 miles is lesser than 19.286 miles (17.375 miles < 19.286 miles), hence, it is evident that Carlos biked further on Sunday than he did on Saturday.
To now calculate how much further he biked, we simply say
How much further Carlos biked on Sunday than on Saturday
= (135/7) - (139/8)
= 19.286 - 17.375
= 1.911 miles.
Hope this Helps!!!