Final answer:
Kala used 2 ¼ gallons more gas on Sunday compared to Saturday.
Step-by-step explanation:
To find out how many more gallons of gas Kala used on Sunday, we need to subtract the amount of gas she used on Saturday from the amount of gas she used on Sunday.
Kala used 1 ½ gallons of gas on Saturday, which is the same as 1 + ½ = 1.5 gallons.
She used 3 ½ gallons of gas on Sunday, which is the same as 3 + ⅝ = 3.625 gallons.
To find the difference, we subtract 1.5 from 3.625:
3.625 - 1.5 = 2.125
Therefore, Kala used 2 ¼ gallons more gas on Sunday compared to Saturday.
Learn more about subtracting mixed numbers