2/3= 0.6667 which you can figure out by 2÷3 3/4= 0.75 which you can figure out by 3÷4 because 0.75 is greater than 0.6667 she has enough to make the cake.
Sergio will buy first! He is earning more than Lia per week, and it would take him about 34 weeks and he’d haves little money left over by that time :)
