Explanation:
Ethan sold 2/3 gallon of lemonade.
Kayla sold some lemonade too.
Together they sold 1 1/4 gallons.
Subtract 2/3 from 1 1/4 as follows :
![S=1(1)/(4)-(2)/(3)\\\\=(5)/(4)-(2)/(3)\\\\=(7)/(12)](https://img.qammunity.org/2021/formulas/mathematics/high-school/901c4f0xx0uktb1xg4kzneq49a1pikb7qo.png)
So, Kayla sold 7/12 gallons of lemonade.
As 2/3 is more than 7/12, it means Ethan sold more lemonade.
![(2)/(3)-(7)/(12)=(1)/(12)](https://img.qammunity.org/2021/formulas/mathematics/high-school/sy9zpfkbpr8rmu5e13bi7im25xsslbskwa.png)
It means Eathn sold 1/12 more lemonade.